Question

daca x apartine (0,pi/2) si y apartine pi/2, pi) iar cosx=sqrt3/2, siny=1/2 calculati y-x

Answer 1

$cosx= \frac{ \sqrt{3} }{2} \\ x= \frac{ \pi }{6} \\ siny= \frac{1}{2} \\ y= \frac{ \pi }{6} \\ y-x= \frac{ \pi }{6}- \frac{ \pi }{6}=0$