4sin(x)^2 - 4sinx+1=0
(2sinx-1)(2sinx-1)=0
sinx =1/2
x=π/6
sinθ = sin(π-θ)
so, x=5π/6 also.
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4sin(x)^2 - 4sinx+1=0
(2sinx-1)(2sinx-1)=0
sinx =1/2
x=π/6
sinθ = sin(π-θ)
so, x=5π/6 also.