# How do you find the reference angle for (25pi)/4?

Aug 10, 2016

$\frac{\pi}{4}$

#### Explanation:

$\frac{25 \pi}{4} = \frac{\left(6 \times 4\right) \pi}{4} + \frac{\pi}{4} = 3 \times \left(2 \pi\right) + \frac{\pi}{4}$

so for functions with minimum period $2 \pi$, the reference angle is $\frac{\pi}{4}$