Question

Find the maximum and minimum values of 6 sin x cos x + 4 cos 2x.

Solution

Correct option is

We have

    6 sinx cos x +4 cos 2x

    3 sin 2x + 4 cos 2x

SIMILAR QUESTIONS

Q1

The number of integral values of k for which the equation 7 cos x + 5 sin x = 2k + 1 has a solution is

 

Q2

 

                                                              

Q3

  

    

are two matrices such that AB is the null matrix, then

Q4

 is independent of θ, then

Q6

The equation sin4 x + cos4 x = a has a real solution for

Q7

If sin θ (1 + sin θ) + cos θ (1 + cos θ) = x and sin θ (1 – sin θ) + cos θ (1 – cos θ) = y then

Q8

If sec A tan B + tan A sec B = 91, then the value of (sec A sec B + tan A tan B)2 is equal to

Q9

The values of θ lying between 0 and π/2 and satisfying the equation

                      

Q10