the general solution to
Sin2x = Cosx+l

Answers

Answer 1

Answer:

Step-by-step explanation:

sin2x = cosx + l

This can be written as:

2 sinxcosx = cosx + 1

One way would be to draw graphs of sin2x and cosx + 1 and see where they intersect.

Another way is to use y = tan(x/2),  then sinx = 2y/(y^2+1) and cos x

= (-y^2 + 1) / (y^2 + 1) to substitute into the given equation and solve for y.

The algebra will be pretty challenging in this method.


Related Questions

What property is shown in the following equation?

17 + 8 + 3 = 17 + 3 + 8

Answers

Answer:

The Commutative Law of Addition.

Step-by-step explanation:

Basically, this law says we can swap numbers over and still get the same number when we add. This has demonstrated exactly that.

Hope this helped!

Answer:

Associative property

Can u guys simplify this?
(2x^-3y^5)^2*(x^7y^-11)

Answers

Answer is in photo! :)
Can u guys simplify this?(2x^-3y^5)^2*(x^7y^-11)
Answer is in the photo

The mean absolute deviation of Mr. Zimmerman's class is 0.46. What does this mean?​

Answers

Answer:

is a measure of the average absolute distance between each data value and the mean of a data set.

A ball is dropped from a height of 80 ft. The elasticity of this ball is such that it rebounds three-fourths of the distance it has fallen. How high does the ball rebound on the fifth bounce? Find a formula for how high the ball rebounds on the nth bounce.

Answers

Formula for how high the ball rebounds on the nth bounce is 80 (3/4)ⁿ  ft and the rebound on 5th bounce is 14.24 ft.    

It is given that the ball is dropped from 80 ft and it rebounds (3/4)th of the height it has fallen.

Firstly , using logic ,

The height reached by the ball on its 1st rebound = 80(3/4) = 60 ft

Similarly , calculating on it's 2nd rebound = 60(3/4) = 45 ft

and on 3rd rebound = 45(3/4) ft.

This forms a sequence , known as GP (Geometric Progression).

A Geometric Progression in mathematics, also known as a geometric sequence, is a sequence of non-zero numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.

Hence , here the first term : a = 60 ft

and common ratio is : r = 3/4

the general term for rebound on nth bounce

= 60 * (3/4)ⁿ⁻¹  = 80 (3/4)ⁿ  ft

Using the above expression , the rebound on 5th bounce                             = 60 * (3/4)⁵ = 14.24 ft.

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This year, the number of raffle tickets sold for a school's extracurricular activities fundraiser is 848. It is estimated that the number of raffle tickets sold will increase by 5% each year. Find the total number of raffle tickets sold at the end of 9 years.

Select the correct answer below:

9,158
9,351
9,818
10,666

Answers

This year, the number of raffle tickets sold for a school's extracurricular activities fundraiser is 848. It is estimated that the number of raffle tickets sold will increase by 5% each year.

The total number of raffle tickets sold at the end of 9 years is approximately 9,818.  

To find the total number of raffle tickets sold at the end of 9 years, we need to calculate the number of tickets sold each year and sum them up.

Starting with the initial number of tickets sold, which is 848, we will increase this number by 5% each year for a total of 9 years.

Year 1: 848 + (5% of 848) = 848 + 42.4 = 890.4

Year 2: 890.4 + (5% of 890.4) = 890.4 + 44.52 = 934.92

Year 3: 934.92 + (5% of 934.92) = 934.92 + 46.746 = 981.666

Year 9: Ticket sales at the end of 9 years = Number of tickets sold in Year 8 + (5% of Year 8 sales)

Year 9: Total = 1,399.585 + 69.97925 = 1,469.56425 ≈ 1,469.56

The total number of raffle tickets sold at the end of 9 years is approximately 1,469.56.

The correct option is 9,818.

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if you take away 25 from a number you will be left with two and halftimes 30. what is the number?​

Answers

The answer would be 100.
If you take away 25 from (100) you get 75.
70 also equals 2.5*30

100 POINTS
Which table shows a proportional relationship between x and y?

100 POINTS Which table shows a proportional relationship between x and y?

Answers

Answer:

The first table is correct!

Step-by-step explanation:

If you divide the Y-var by they by the X-var you would get 12 (as an answer) for all of them...which makes them proportional, YW! :D

Table 1

(4,48)(7,84)(9,108)

\(\\ \rm\Rrightarrow \dfrac{84-48}{7-4}=\dfrac{108-84}{9-7}\)

\(\\ \rm\Rrightarrow 12=12\)

Hence verified

are the roots equal or unequal ?
\(x {}^{2} - 6x + 9 = 0\)

Answers

This can be factored as (x-3)^2, so they are equal

Ms. Zimmer pushes a trash can and it moves across the cafeteria floor

Answers

Answer:

Step-by-step explanation:

Two cross roads, each of width Sm, run at right angles through the
centre of a rectangular park of length 70m and breadth 45m and
parallel to its sides
On the basis of the above information, answer any four of the
following questions​

Answers

Answer:

Rs 57750

Step-by-step explanation:

width =5 m

length of first parallel road 70 m

area of first road 70×5=350 sq.m

length of second road 45 m

area of second road =45×5=225 sq.m

area of the common part of cross road with 5 m width that lies at the

center of the park 5×5 = 225 sq.m

area of roads = area of first road +area of second cross road−common area

=(350+225)−25

=575−25

=550sqm

cost of the construction per sq.m =Rs.105

total cost =550×105=Rs 57750

Answer the 3 problems below please. There due on Thursday Mar 12 2021

Answer the 3 problems below please. There due on Thursday Mar 12 2021
Answer the 3 problems below please. There due on Thursday Mar 12 2021
Answer the 3 problems below please. There due on Thursday Mar 12 2021

Answers

Answer:

where

Step-by-step explanation:

where are the problems i dont see them explain to me

Answer:

well im not sure about 1 and 3 but i think for number 2 it would be 18 games in total

Step-by-step explanation:

Can somebody help ill give you brainliest!!! and 20 points​

Can somebody help ill give you brainliest!!! and 20 points

Answers

Answer:

Genotype: 100% rr
phenotype: 100% white

Step-by-step explanation:

since there are no dominant genes the cross will definitely be a rr genotype

You download a video game on your computer. You have a 60-minute free trial of the game. It takes 5 1/6 minutes to set up the game and 7 1/3 minutes to play each level. You want to find out how many levels you can play for free write an inequality that describes the number of levels, l, you can play in 60 minutes

Answers

for me i think and calculated 9 levels

Given m∥n, find the value of x.

Given mn, find the value of x.

Answers

Answer:

x = 11

Step-by-step explanation:

The two angles measuring (7x + 14)° and (9x - 8)° are corresponding angles, which are always congruent to each other and thus equal to each other.  

Step 1:  Thus, we can find the value of x by setting the two angles equal to each other:

7x + 14 = 9x - 8

7x + 22 = 9x

22 = 2x

11 = x

Optional Step 2:  We can check that we've found the correct answer by plugging in 11 for x in both (7x + 14) and (9x - 8) and checking that we get the same number:

7(11) + 14 = 9(11) - 8

77 + 14 = 99 - 8

91 = 91

I need help asap please!!!

I need help asap please!!!

Answers

The values of the angles given are: 0,90,180,240,270,360,420,480,540,600,630,660,720 and

What is sine of angles?

he sine of an angle is the trigonometric ratio of the opposite side to the hypotenuse of a right triangle containing that angle.  It is defined as the length of the opposite side divided by the length of the hypotenuse

The given angles are: 0,30,45,90,120,135,180,210,225,240,270,300,315,330,360

2∅  2*∅ = 0, 90,180,240,270,360,420,480,540,600,630,660,720

sin 2∅ = sin0 = 0; Sin90=1;  sin180=0; sin240= -0.8660; sin270 = -1;

Each angle is multiplied by sine sine360 =1; sin420 = 0.8660; sin480= 0.9848; sin540=1; sin600=-0.8660; sin630=-1; sin660=0.8660; sin720= 0.9397

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Graph the image of rectangle  after a translation 6 units right and 1 unit down.​

Graphthe image of rectangleafter a translation6units right and 1 unitdown.

Answers

Answer:

see image

Step-by-step explanation:

one by one, move each point

Graphthe image of rectangleafter a translation6units right and 1 unitdown.
Use the points and move each point to the right 6 and go down 1 and make a new mark.

In a different plan for area​ codes, the first digit could be any number from 1 through 7​, the second digit was either 1​,2 or 3 and the third digit could be any number except 3,8 0r 9 With this​ plan, how many different area codes are​ possible?

Answers

there are 84 different area codes possible with this plan.

Why it is and what is a code?

There are 7 possible choices for the first digit, 3 possible choices for the second digit and 7 - 3 = 4 possible choices for the third digit. So, using the multiplication principle, the total number of possible area codes is:

7 x 3 x 4 = 84

Therefore, there are 84 different area codes possible with this plan.

A code is a set of symbols or instructions used to represent information or instructions in a form that is understood by a computer or other device. It is a system of rules or algorithms used to convert information or data into a specific format for transmission, storage, or processing.

Codes can be used for a variety of purposes, such as programming, encryption, decoding, or data compression, among others. They are a fundamental component of modern computing and digital communication systems.

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find the equation that represents the proportional relationship in this graph, for y in terms of x​

find the equation that represents the proportional relationship in this graph, for y in terms of x

Answers

for x=5 y=4 so we can calculate the slope m=(y1-y)/(x1-x)=(5-0)/(4-0)=5/4
then use (y-y1)=m(x-x1) and you get
y=(5/4)x-5

Find the perioa
equation.
llowing
y = 2 cos(5x + 3) - 6
77
Period = [2]T
Give your answer in simplest form.

Find the perioaequation.llowingy = 2 cos(5x + 3) - 677Period = [2]TGive your answer in simplest form.

Answers

Answer:

In the equation y = 2 cos(5x + 3) - 6, we can ignore the coefficients 2 and -6 for the purposes of calculating the period because they do not change the period. They only change the amplitude (2) and vertical shift (-6) of the function.

The coefficient 5 in front of x inside the cosine function affects the period of the function. It is a horizontal compression/stretch of the graph of the function.

The period of the basic cosine function, y = cos(x), is 2π. When there is a coefficient (let's call it b) in front of x, such as y = cos(bx), the period becomes 2π/b.

So, in your case, b = 5, so the period T of the function y = 2 cos(5x + 3) - 6 is:

T = 2π / 5

This is the simplest form for the period of the given function.

Suppose Deandre places $5000 in an account that pays 8% interest compounded each year.
Assume that no withdrawals are made from the account.
Follow the instructions below. Do not do any rounding.
(a) Find the amount in the account at the end of 1 year.
(b) Find the amount in the account at the end of 2 years.

Answers

The amount in the account at the end of 1 year is $5400.

The amount in the account at the end of 2 year is $5832.

What do you mean by interest rate?

The real yearly cost of funds over the course of a loan is the annual rate that is charged for borrowing (or made by investing), expressed as a single percentage number.

According to data in the given question,

We have:

Deandre places $5000 in an account that pays 8% interest compounded each year.

And no withdrawals are made from the account.

Now, we need to determine the amount of 8% interest on the $5000,

\(=\frac{5000}{100}*8\\ =400\)

Then, the amount in the account at the end of 1 year =$5000+$400

=$5400.

Now, we need to determine the amount of 8% interest on the $5400,

\(=\frac{5400}{100}*8\\ =432\)

So, the amount in the account at the end of 2 year =$5400+$432

=$5832.

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A travel agent receives a 6% commission on the base fare of a customer- that is, the fare before sales tax is added. If the total fare
charged to a customer comes to $787.91 including 5.5% sales tax, how much commission should the agent receive?

Answers

The agent will get $47.2746 for his commission.

What is the percentage?A percentage is a number or ratio expressed as a fraction of 100 in mathematics. The percent sign, "%," is commonly used, but the abbreviations "pct.", "pct," and sometimes "pc" is also used. A percentage is a number with no dimensions; it has no unit of measurement. To calculate a percentage, divide the value by the total value and multiply the result by 100. (value/total value)100% is the formula for calculating the percentage.

So, we have to take out 6% of $787.91 in order to obtain the commission of the agent.

Then,

787.91/100 × 67.8791 × 6$47.2746

Therefore, $47.2746 will the agent get for his commission.

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What is the hiker’s maximum rate of ascent if they move from the point (1.5, 4) in the direction of the steepest ascent? Include units, and circle your final answer.

Answers

Answer:

our first questions about the steepness of a surface: starting at a point on a surface given by f(x,y)f(x,y), and walking in a particular direction, how steep is the surface? We are now ready to answer the question.

We already know roughly what has to be done: as shown in figure 14.3.1, we extend a line in the xx-yy plane to a vertical plane, and we then compute the slope of the curve that is the cross-section of the surface in that plane. The major stumbling block is that what appears in this plane to be the horizontal axis, namely the line in the xx-yy plane, is not an actual axis—we know nothing about the "units'' along the axis. Our goal is to make this line into a tt axis; then we need formulas to write xx and yy in terms of this new variable tt; then we can write zz in terms of tt since we know zz in terms of xx and yy; and finally we can simply take the derivative.

So we need to somehow "mark off'' units on the line, and we need a convenient way to refer to the line in calculations. It turns out that we can accomplish both by using the vector form of a line.♡

Write 69200000 in scientific notation

Answers

69200000 in scientific notation is  6.92 × 10⁷.

How to represent number in scientific notation?

Scientific notation is a form of presenting very large numbers or very small numbers in a simpler form.

Scientific Notation is a special way of writing numbers:

For example 800 is written as 8 × 10² in Scientific Notation.

Therefore, let's write the scientific notation of the number 69200000.

Hence,

69, 200, 000 = 6.92 × 10⁷

The logic is that we will count backwards until we meet the last number. Since we counted towards the left side, the exponent will be positive.

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2.
Elena has a
pet parakeet that weighs 6 when measured in one unit and
170 when measured in a different unit. Which measurement is in ounces,
and which is in grams?
170

Answers

Measurement of weight 6 is in ounces and the measurement of weight 170 is in grams.

What is measurement?

An object or event's attributes are quantified through measurement so that they can be compared to those of other things or events. Measurement, then, is the process of establishing how big or small a physical quantity is in relation to a fundamental reference quantity of the same kind.

Given:

Elena has a pet parakeet that weighs 6 when measured in one unit and

170 when measured in a different unit.

We have to find the correct units from grams and ounces for these.

We know that, 1 ounce is greater than 1 gram.

1 ounce = 28.3495 grams

Multiply both sides by 6.

6 ounces = 170.097 grams

Approximate the values to the nearest whole number.

6 ounces = 170 grams

Therefore, 6 ounces = 170 grams.

Hence, measurement of weight 6 is in ounces and the measurement of weight 170 is in grams.

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Abby owns a square plot of land. She knows that the area of the plot is between 2200 and 2400 square meters. Which of the following is a possible value for the side length of the plot of land.

Answers

The possible value of the side length of the plot of land that Abby owns, which is between 2200 and 2400 square meters is A. 48 meters.

What is the length?

The length is the quantitative measurement of a distance from one point to another position.

Length can also refer to the size of an object that has width or/and height.

Data and Calculations:

The square of 2,200m² = 46.9 meters (√2,200)

The square of 2,400m² = 48.99 meters (√2,400)

The square of the median value of 2,200m² and 2,400m², which is 2,300m² is 48 meters approximateluy.

Thus, the possible value of the side length of the plot of land is A. 48 meters.

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Question Completion with Answer Options:

A. 48 meters

B. 46 meters

C. 44 meters

D. 50 meters

n this equation, one-fourth is added to the variable y.

y+14=34

What is the value of y?



The value of y is = -------------

Answers

Answer:

I think its 19.75

PLEASE I HAVE 20 MINUTES
(Thanks in advance :)

PLEASE I HAVE 20 MINUTES(Thanks in advance :)

Answers

Answer: 56.52mm

Step-by-step explanation:

First, you have to find the circumference of the wheel and divide it by 25 since the spokes are equally spaced.

The equation for the circumference of a circle is:

C = 2πr

C = 2 x π x 225

C = 1413

Then, you divide it by 25

1413/25 = 56.52

Write an expression to represent: 9 more than the quotient of 2 and x

Answers

Expression for given numerical is: 9+ (2/x)

Given that we have an word equation that is 9 more than the quotient of 2 and  x

A quotient is a quantity produced by the division of two numbers.

Quotient of 2 and x is \(\frac{2}{x}\).

Nine(9) more  than 2/x is = 9+ (2/x)

So we have an expression that is:

              9+ (2/x)                          

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A store is having 10% off all pairs of shoes do you want a pair of shoes that normally cost $75 what is the sale price of the pair of shoes you want

Answers

Answer:

You pay 67.5 for the shoes.

Step-by-step explanation:

10% of 75 is 7.5.

75 - 7.5 = 67.5

Please Mark Brainliest!

Answer:

Here ya go! Hope it helps

A store is having 10% off all pairs of shoes do you want a pair of shoes that normally cost $75 what

The most obese countries in the world have obesity rates that range from 11.4% to 74.6%. This data is summarized in the following table.
Percent of Population Obese Number of Countries
11.4–20.45 29
20.45–29.45 12
29.45–38.45 4
38.45–47.45 0
47.45–56.45 3
56.45–65.45 2
65.45–74.45 1
74.45–83.45 1
(a) What is the best estimate of the average obesity percentage for these countries? (Round your answer to two decimal places.)


(b) The United States has an average obesity rate of 33.9%. Is this rate above average or below? (Round your answers to two decimal places.)
Since the average for the United Sates is 33.9%, compared to the average obesity rate of
%, the United States has an obesity rate
% higher than average.

(c) How does the United States compare to other countries? (Assume that the United States is included in the data. Assume the other countries in the range 29.45–38.45 have higher obesity than the United States.)
The United States has an obesity rate higher than about 81% of the other countries listed.
The United States has an obesity rate equal to about 81% of the other countries listed.
The United States has an obesity rate lower than about 50% of the other countries listed.
The United States has an obesity rate higher than about 19% of the other countries listed.

Answers

i believe the answer is c
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