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Автор - beluginak

Помогите решить уравнение
sin^2 x+sinx-2

Ответ

Автор - 777sanyapro100

sin^2 (x) + sinx - 2 = 0

sinx = t ; | t | =< 0

t^2 + t - 2 = 0

{[t = -2

{[t=1 t = 1

{ | t | =< 0

sinx = 1

x = π/2 + 2πk ; k € Z

Ответ : π/2 + 2πk ; k € Z

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