Question

The period of cos 4x is​

Answer 1

Answer:

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Answer 2

Answer:

Basically cos(x) cycle completes in 360° or 2 piewhich is the period of cosx

Cos(2x) cycle completes in 180°orpie

Cos(3x) cycle completes in 120°or2/3pie

So if you see, there’s basically a pattern, i.e., you divide 360 by the coefficient of x. Hence incase of cos (4x) it’ll be 360/4=90 hence the cycle will complete in 90° or 1/2pie