Question

РЕШИТЕ УРАВНЕНИЕ
sin2x=cos^2x

Answer 1

Sin 2x = cos^2 x
2sin x cos x= cos^2 x
Cos x (2 sin x - cos x)=0
Cos x =0
X= pi/2 + pi n

2 sin x - cos x=0
Cos x <>0
2 tg x -1=0
X= arctg (1/2) +pi n