If sin a- 4/5, what is cos B? O 5/4 O 3/5 O 4/5 O not enough information

Q: 6. Which of the following expressions are equivalent to the expression below? 0 1 O -1 cotx + tanx 1…

A: let B=cotx+tanxwe know, tanx=sinxcosx  and  cotx=cosxsinx

Q: 1) If Cos A= 4/5 Then Find the value of Sin 2A O 24/25 O ((24)/25 7/25 O (-7)/25

A: In the question we have to find the value of sin2A.

Q: The Equivalent expression of cos 3A sin A cos A is Select one: csc A – 2 sin A + 2 sin? A CSc A csc…

A: Simplification of trigonometric ratio

Q: 8. cos x+- +sin x- 3 6.

A: According to the guidelines I have to solve only first question. We can solve this problem…

Q: What expression is equal to the given expression below? 1- tan²x 1+tan²x a. sin 2x b. cos 2x -sin 2x…

A: Given: 1-tan2x1+tan2x We write tan x by using the ratio of sin x and cos x.

Q: Which of the following is not equivalent to cos (-? 4 a. sin O b. sin(45°) cos С. cOS d. cos 4

A: Given that: cos-π4

Q: What is 1 + (COS ™n) when n = 4? 01 O -1 O2

A:

Q: Which is equal to cos? 2π 3 2/5455 3 O cos O sin 2T 3 O cos O sin

A:

Q: Write the value of cos +2sin 2 1 1 -1

A: cos-1-12+2sin-112

Q: 23 Select the correct answer. What is the exact value of cos 112.5 ? 2 V2 O B. V2+2 C. V2 + v2 4 O…

A: To find:-  Exact value of cos(112.5°)

Q: Which of the following expressions is exactly 1? T 3 7) T cos () cot ( sec ( 품) tan (4) - O sin (품)…

A:

Q: Rewrite the expression cos (0) without using any powers of sin or cos.

A: We have to rewrite the expression cos4( θ) without using the powers of sin or cos .

Q: Find the exact value of cos( O 1 V2 O √3 2 0 -13 O 12 2 큼 -9 4

A: We can find the exact value in the below steps.

Q: What is the cofunction of the complement of cos 22 o?   a. cos 22o   b. sin 68o   c. sin 22o   d.…

A: Cofunction of cosine is sine angle. Complementary means if we add both angles we will get 90 degrees…

Q: Evaluate cos 2 cos 7x without using a calculator. (Assume x>0.) |

A: given that cos( 2cos-1 7x) and we simply this here x>0 . Here i attached solution of this…

Q: 3. Find the equovalent of cOs (A+B) answer should contain cosA COS B Sin A an d tan B

A: Value of Sinx/Cosx is tanx

Q: 15 8 C 17 A B.

A:

Q: 1.) What is the cos(B)? 10 5/3 C 5 B. A,

A:

Q: Use the product-to-sum identities to rewrite the following expression. sin 16° sin 8° ..... Choose…

A: According to question given:sin(16°) sin8°We have to solve the given expression.

Q: Find cos 2a if 4 sin a - COS a = 3. 2 sin a + COS a

A: −53​Explanation:Click shift solve then equals.