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How can i solve this equation?

Sin

sin^(3)x + 3sin {}^(2) x + 2 \sin x = 0
Please help me if you can

How can i solve this equation? Sin sin^(3)x + 3sin {}^(2) x + 2 \sin x = 0 Please-example-1

1 Answer

3 votes
Factorizing sin2x+3sinx+2=0

sin^2 x+2sinx+sinx+2=0

or sinx(sinx+2)+1(sinx+2)=0

or (sinx+1)(sinx+2)=0

Now as sinx+2≠0, we have sinx+1=0

or sinx= −1 =sin(3π/2)

Hence, x=2nπ+3π/2
User Ikaros
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