Suppose \sin (u)=\frac{3}{5} \cos (u)= \tan (u)= \sin (-u)= \cos (-u)= \tan (-\mu)= \sin (u+\pi)= \cos (u+\pi)= \tan (u+\pi)= \sin \left(u+\frac{\pi}{\pi}\right)= \cos \left(u+\frac{\pi}{2}\right)= \tan \left(x+\frac{\pi}{2}\right)=