# Trig transformation graph - Easy

• Mar 4th 2011, 04:16 PM
Kuma
Trig transformation graph - Easy
I forgot how to do this.

6 cos(4x).
6 sin(8x)
i know the amplitude is 6. I'm having trouble finding the period.
Can someone tell me how to find what the period is?
• Mar 4th 2011, 04:20 PM
e^(i*pi)
The period of $\sin(ax)$ is $\dfrac{2\pi}{a}$. Same applies for $\cos(ax)$