Question

How do you sketch the angle `(5pi)/4` and find its reference angle?

Answer 1

The reference angle is `45^o`

Explanation:

On the unit circle every `45^o` is equal to `pi/4`
So `(5pi)/4` is equal to `225^o`

However the reference angle is always taken from degree from the `x` axis
This makes the reference angle `45^o`