How would I solve this trig equation
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How would I solve this trig equation

[From: ] [author: ] [Date: 12-08-02] [Hit: ]
......
4 sin ² x - 4 sin x + 1 = 0 ?

The quadratic formula doesn't seem to work or I am doing it wrong.
Grouping doesn't seem to work.
I am out of options what am I missing?

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It's a perfect square
(2sin(x) - 1)² = 0


The quadratic formula works too, but you have to do
sin(x) = [quadratic formula here]

as the function sin(x) is the "variable" in the quadratic equation.
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