4sin x\2cos x\2=-1 уравнение

Question

4sin x\2cos x\2=-1 уравнение

Answer 1

2*2sin x/2 cos x/2 = -1 2*sin2 * x/2= -1 2 sin x = -1 sin x = -1/2 x = (-1)^(n+1) П/6 + Пn, n€Z