Question

Решите урав
|sin x| = sin x + 2 cos x

Answer 1

1)sinx=sinx+2cosx
2cosx=0
cosx=0
x=pi/2 + 2(pi)k
2)sinx=-sinx-2cosx
2sinx=-2cosx
tgx=-1
x=-(pi)/4 + (pi)k