## anonymous one year ago What is the frequency of the function y = -5cos6x?

1. kropot72

You can use the following equation $\large y=A \cos Bx$ where the period $\large T=\frac{2 \pi}{B}$ to find the period of the given function by plugging in values, giving the period $\large T=\frac{2\pi}{6}$ The frequency is the reciprocal of the period. Therefore $\large f=\frac{6}{2\pi}$

2. kropot72

which can be simplified to $\large f=\frac{3}{\pi}$

3. anonymous

thank you!!!@kropot72

4. anonymous

no i have a boyfriend @David27

5. kropot72

You're welcome :)