
Q. For 0 β€ π₯ β€ 2π, sin π₯ and cos π₯ are both decreasing functions in the interval

Ans: Option B
Sol:
Sin x is increasing function in the interval 0
Sin x is decreasing function in the interval Ο/2
Cos x is increasing function in the interval Ο
Cos x is decreasing function on the interval 0