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## Question

### Solution

Correct option is

2 cos x

#### SIMILAR QUESTIONS

Q1

Find the possible integral values of a for which cos 2x + a sin x = 2a – 7 has solutions.

Q2

Simplify the product cos A cos 2A. cos22A…..cos2n-1A.

Q3

Find the maximum and minimum values of

Q4

If cos 5θ = a cos θ + b cos3 θ + c cos5 θ + d, then

Q7

If tan α = 5/6 and tan β = 1/11, then

Q9

If tan x tan y = a and x + y = π/6, then tan x and tan y satisfy the equation