Question

cos 90 градусов и синус 90!!!

Cрочно!!!

Answer 1

cos 90° = cos П/2 = 0
sin 90° = sin П/2 = 1

Answer 2

◘ $cos90^{0} = cos \frac{ \pi }{2} = 0$
◘ $sin90^{0} = sin \frac{ \pi }{2} = 1$