Решите уравнение 3sin2х+5sinx+2=0

Question

Решите уравнение 3sin2х+5sinx+2=0

Answer 1

3sin2х+5sinx+2=0

5sin(x)+6sin(x)cos(x)+2=0

5sin(x)+3sin(2x)=-2

sin(x)(6cos(x)+5)+2=0

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