Laizius
5 год назад
Решите уравнение sin2x-sinx = 0
ОТВЕТЫ
Феодорович
Jun 30, 2019
Sin 2x - sin x = 0
2sin x * cos x - sin x = 0
sin x * (2cos x - 1) = 0
sin x = 0
x = πk, k ∈ Z
2cos x - 1 = 0
cos x = 1/2
x = ±π/3 + 2πn,n ∈Z
2sin x * cos x - sin x = 0
sin x * (2cos x - 1) = 0
sin x = 0
x = πk, k ∈ Z
2cos x - 1 = 0
cos x = 1/2
x = ±π/3 + 2πn,n ∈Z
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