Question

How do you determine the period for `y=cos(θ/4)`?

Answer 1

Period : `theta =8pi`

Method used:
The period of `costheta` is `2pi` because a complete cycle is made by covering an angle of `2pi`

Hence, the period of `cos (theta/4)` will be the value of `theta` for which `theta/4= 2pi`

`=> theta =8pi` is the period!