Use identities to simplify the expression. 1 tan?a - 2 cos cos -a 1 tan a - %3D 2 Cos Fa II

Q: 4л Evaluate cos 3. a. b. 0.5 с. -2 d. -0.5

A: we have to evaluate cos(4π/3)

Q: photo attached

A: The given trigonometric values are,

Q: A. Simplify each of the following expressions. 1. sin?xcotxcscx cotx(sinx+tan.x) cscx+cotxr 3.…

A: 2. cotx sinx+tanxcscx+cotx4. 1-tan2x1+tan2x+1

Q: cos?(18°) – sin?(18°)

A: The answer is given below

Q: Simplify the expression using Sum and Difference Identities. Cos 4x cos3x + sin 4x sin 3x %3D

A:

Q: Simplify sin?g + sing csce + cos?g. 2 1

A: We can find the answer as below.

Q: 7. Evaluate each expression. (a) sin? 120° + cos² 120°

A: Since there are multiple questions present and you have not specified which question to answer,…

Q: Write an equivalent algebraic expression that involves x only.      tan (cos- 1 x)

A: Evaluate tancos-1x       ...(1)

Q: 3. Find the exact value of I tan + tan 10 I 15 I I 1- tan tan- 10 15

A: Formula:   .

Q: Simplify the expression. Do not evaluate. 2 cos?(37°) – 1

A:

Q: Simplify the expression: cos²x (1+tan² x) Answer= type your answer...

A: Consider the expression:To Find:Simplify the above expression:

Q: Simplify the following expression. csc (3) 4 CoS sin CS

A: Given, The expression cossin-114-csc-13 We have to simplify the above expression.