sinx + sin2x = 1 then what is the value of x

i try it so many time

Your Answer

sinx+sin2x=1
or, sin x+2sinx cosx=1
or, sinx(1+2cosx)=1
or, (1-2cosx)(1+2cosx)=1
or, 1-4cos x^2=1
or, -4cos x^2=0
or, cosx x^2=0
or, cos x=0
or, cos x=cos 90
or, x=90

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