# Thread: Trig identities test tom

1. ## Trig identities test tom

is there any tips that i should know of?

2. ## Re: Trig identities test tom

Maybe that $\displaystyle \tan \theta = \frac{\sin \theta}{\cos \theta}$

What level of math are you studying?

3. ## Re: Trig identities test tom

$\displaystyle \tan \theta = \frac{\sin \theta}{\cos \theta}$ and $\displaystyle \sin^2 \theta+\cos^2 \theta=1$