Решить уравнения:

cos(5/2П + х) = -1 

sin(9/2П + х) = -1

1)cos(5π/2+x)=-1cos(2π+π/2+x)=-1cos(π/2+x)=-1sinx=-1x=-π/2+2πn2)sin(9π/2+x)=-1sin(4π+π/2+x)=-1sin(π/2+x)=-1cosx=-1x=π+2ππn