Question

What is the period of sin³x + cos³x is?-

A) π/2 B)π C)2π D)3π/2

Answer 1

Hey mate your answer is here...

Option c is correct.

Hope its helpful

Answer 2

Answer:

sin³x = (sin²x) (sinx)

= (1/2-cos(2x)/2) (sinx)

period of cos2x is π

period of sinx is 2π

so,l.C.M.(π,2π) =2π

similarly period of cos³x is 2π

therfor period of sin³x + cos³x is 2π Ans.