Question

Pls help .solve the 63rd que. PLS.PLS

Answer 1

Cos x - sin x >= 0

Since both cos x and sin x can have values from -1 to 1,
cos x must be 0 or positive and sin x should be 0 or negative.

The value of x for which cos x is positive and sin x is negative is 3π/2 to 2π(fourth quadrant).

2π is same as 0. So 0 is also included.

Answer is C.