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

Apr 24, 2018

The reference angle is ${45}^{o}$

#### Explanation:

On the unit circle every ${45}^{o}$ is equal to $\frac{\pi}{4}$
So $\frac{5 \pi}{4}$ is equal to ${225}^{o}$

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