Question

the period of cos 5 theta is​

Answer 1

Given : cos 5 theta    , cos 5θ

To Find : period

Solution:

Period of a function is the interval at which  function returning to the same value.

if p is the period of a function f(x)

=> f(x + p) = f(x)

Period of  cosθ  is  2π

Period of cos ( bθ)    =   2π/b

hence period of cos 5θ  = 2π/5

period of cos 5θ is 2π/5  

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