Double and half angle identities?

Double And Half Angle Identities?

Answers

Answer 1

Answer:

Option 4

Step-by-step explanation:

Given:

Sinθ = [tex]\frac{15}{17}[/tex]

Since, cos2θ = 1 - 2sin²θ

cos2θ = [tex]1-2(\frac{15}{17})^2[/tex]

cos2θ = 1 - [tex]\frac{450}{289}[/tex]

cos2θ = [tex]\frac{289-450}{289}[/tex]

cos2θ = [tex]-\frac{161}{289}[/tex]

Therefore, Option 4 will be the answer.


Related Questions

sultan weighs 70 kg, he started a diet plan and is losing 2 kg a month. the equation y = 70 - 2x represents his weight,y, in kilograms after x months. find his weight after 4 months if he continues with his plans and obtains the same results after 4 months,Sultan will weight?​

Answers

Answer:

62 kg

Step-by-step explanation:

Weight loss equation for sultan :

Y = 70 - 2x

Y = weight in kilogram ; x = number of months

Sultan's weight after 4 months

Put 4 in x in the equation and calculate the value of y

Y = 70 - 2(4)

Y = 70 - 8

Y = 62kg

Weight after 4 months is 62 kg

Pls help me do this problem

Answers

If it’s congruent it should be 1:1

What is 2/3 of 3/8 in fraction or decimal form or both idc

Answers

Answer:

Simplify the expression.

Exact Form:

1/4

Decimal Form:

0.25

Step-by-step explanation: If you are satisfied with my answer mark me the Brainliest!!! With A 5-star rating also saying Thanks.

Work out 15% of £80.

Answers

Answer:

15% of (£80) =

£12

Step-by-step explanation:

1/4x+1/2=3/4 pls help

Answers

the steps are
1. combine multiplied terms to single fractions
2. then multiply them by 1
3. subtract a half from them
Put the value of x =1
LHS
1/4(1)+1/2
1/4+1/2
Let’s take LCM of 4 and 2 , you will get 4.
Now, (1+2 )/4
=3/4

RHS=3/4

LHS = RHS



Hope it helps!

HELPO THIS IS DUE SUPER SOOONN!!! SHOW WORK

Answers

Answer:

5x^2-4x-1

Step-by-step explanation:

(2x^2+5x+17)+(3x^2-9x-18)

5x^2-4x-1

Common factors of 3x^2y^2,10x^3y^2,6x^2y^2z

Answers

X2y2 is the common factor

3 divided by 3/4 (please hurry)

Answers

Answer: 0.25

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

multiply by the recipricol

3x 4/3

3's cancel eachother out

answer is 4

Joseph has a collection of Pokemon cards. He has 3 times as many Character cards as he has Energy cards. He has a total of 312 cards in his collection. Which equation could be used to determine the amount of Energy cards, e, he has in his collection?

Answers

Answer:

e = 312/4

Step-by-step explanation:

The width of a rectangle measures (3v-3w) centimeters, and its length measures (5v-9w) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?

Answers

Answer: The Perimeter of the rectangle, P= 16v −24w

Step-by-step explanation:

Perimeter of a rectangle  = 2( L +W) =   2L + 2W

The width of a rectangle is given as  (3v-3w) centimeters,

its length is given as (5v-9w) centimetres

The Perimeter,P will now be  = 2L + 2W

P=2( 3v-3w) + 2( 5v-9w)

P=6v  −6w + 10v  - 18 w

 adding like terms

P=6v + 10v  −6w −18 w

P= 16v −24w

Question:
1. Find the constant of proportionality for Company A and Company B. (to the nearest tenth)
2. Write an equation that represents the relationship between the number of hours h and the total cost for Company A and Company B.
3. Compare the unit rates of Company A and Company B.​

Answers

Answer:

Proportional relationship formula:

y = kx, where k is the constant of proportionality

Use one of the ordered pairs to calculate the value of k

Company A

Point (2, 20)

20 = k*2h = 20/2k = 10

The equation: y = 10h

Company B

Point (3, 20)

20 = k*3k = 20/3The equation: y = 20/3h

Company A has greater unit rate as 10 > 20/3

In the last 2 years the
price of squishmellows has
gone up by $5 each. If
squishmellows originally
cost $10 what was the
percent change?
Hint: use the proportion
forumula

Answers

Answer:

50%

Step-by-step explanation:

Answer:

50% !! for sure :)

Step-by-step explanation:

which sum does the model below represent

Answers

Answer:

A- is ur answer

Step-by-step explanation:

hope this helps

real quick some help

Answers

i don’t think they gave u all the information srry bro

Combine the like terms to create an equivalent expression,
6t + 7 - 2 +0

Answers

combine like terms
6t + (7 - 2 + 0)
6t + (5 + 0)
6t + (5)

answer: 6t + 5

There are 10 dogs and 15 cats. What is the ratio of dogs to cats

A. 10:25
B. 10:15
C.15:10

Answers

Answer:

B

Step-by-step explanation:

Answer: 10:15

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

am I correct or is there more?

Answers

20/25 is one I think

Boondocks Wallpaper part 2. part 3 will be in 5 minutes.

Answers

Answer:

thanks man I really appreciate it

Answer:

Hiii

Step-by-step explanation:

If JKLM is an isosceles trapezoid, what is the value of m

Answers

Stan Penelope Juliette haynes for clear skin babes


3. Tyler owes the bank $180. His brother owes the bank $70
less than Tyler does. How much does the brother owe the
bank?

Answers

His brother owes $110

Answer:

The brother owes $110 less than Tyler. The brother owes $70.

Step-by-step explanation:

What is the value of A in this equation: a/15 = 5

Answers

Answer:

a=75

Step-by-step explanation:

75/15=5

Answer:

3

Step-by-step explanation: 5x3=15 15 divided by 3 is 5

What is the slope between (2, 7) and (3, 3)

Answers

m=-4


let me know if you need be to explain

Help me with this please

Answers

Answer:

(4.5, 9.5) OR (9/2, 19/2)

Step-by-step explanation:

To find the midpoint of two points you must add the coordinates and divide by 2.

4+5= 9 /2 = 4.5

9+10= 19/2 = 9.6

(4.5,9.5) or (9/2,19/2)

Plz hwlp fast i need help like rn

Answers

I don't know so here's a meme, lol take a joke, it's 12am, I'm exhausted, and delaireus, and I need points.

Solve the inequality then graph: The product of a number and 3 increased by 9 is less than -42

Answers

Answer:

(1/2)n + 9 > 33

Step-by-step explanation:

I hope this helps u

a point is chosen at random on AK. what is the probability that the point will be on CD. don't forget to reduce

Answers

Answer:

your answer is 1/10. hope this helps!

The probability that the point will be on CD will be 1/10 or 0.10.

What is probability?

Its basic premise is that something will almost certainly happen. The percentage of favorable events to the total number of occurrences.

A point is chosen at random on AK.

The distance between A and K will be 20.

Then the probability that the point will be on CD will be

The distance between C and D will be 2.

Then the total event will be

Total event = 20

The favorable event will be

Favorable event = 2

Then the probability is defined as the ratio of favorable event and total event.

P = Favorable event / Total event

P = 2 / 20

P = 1 / 10

P = 0.10

Then the probability that the point will be on CD will be 1/10 or 0.10.

More about the probability link is given below.

https://brainly.com/question/795909

#SPJ5

Somebody help me, if at all possible show me how to solve problems like this so I'm not relying on Brainly to help me. (HELPFUL ANSWERS ONLY PLEASE)

Answers

Answer:

yz=34

Step-by-step explanation:

[tex]6(2x+12+6)=10(x+3+10)\\\\6(2x+18)=10(x+13)\\\\12x+108=10x+130\\\\12x-10x=130-108\\\\\frac{2x}{2}=\frac{22}{2} \\\\x=11\\\\yz=2x+12 \\\\=2(11) +12\\\\\yz=34[/tex]

have a nice day!!

How would I do this and work it out ? Only 15-17

Answers

Step-by-step explanation:

15. 6.06

16. -7.21

17. 1.82

The required values of the given radials are √37 = 6.06, - √52 = -7.21, and √3.3 = 1.82.

What is Square Root?

The number's square root is that component of a number that, when multiplied by itself, generates the original number. Special exponents are squares and square roots.

The square root of 37 lies between the square root of 36 and the square root of 49. Hence, √36 < √37 < √49 ⇒ 6 < √37 < 7

Divide 37 by 7. 37 ÷ 7 = 5.28

Find the average between 5.28 and 7.

(5.28 + 7)/ 2 = 12.28 /2 = 6.06

Thus, √37 ≈ 6.06

- √52 = - √(2 × 2 × 13)

- √52 = - 2√13

- √52 = - 2 × 3.605

- √52 = - 7.21111

- √52 = - 7.21

√3.3 = 1.82

Thus, the required values of the given radials are √37 = 6.06, - √52 = -7.21, and √3.3 = 1.82.

To learn more about the square root here :

https://brainly.com/question/1387049

#SPJ2

number 12 find x....

Answers

Answer:

B= 13

Step-by-step explanation:

10x-5= 180-(4x+3)

10x-5=180-4x-3

10x-5+3=180-4x

14x-2=180

14x= 180+2

14x= 182

x=182/14

x=13

Kevin invested $2,500 in an account paying an interest rate of 2.7%
compounded daily. Assuming no deposits or withdrawals are made,
how long would it take, to the nearest year, for the value of the
account to reach $3,460?

Answers

Answer:

It is 12 years

Step-by-step explanation:

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