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OpenStudy (anonymous):
Find all solutions in the interval [0, 2π). 4 sin^2x - 4 sin x + 1 = 0
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OpenStudy (anonymous):
im not sure whether to factor
OpenStudy (kainui):
I suggest making a substitution, y=sinx. That'll make it more easy to use a quadratic equation or to factor it. Then just plug back in for y after you're done and continue solving.
OpenStudy (anonymous):
ok thanks, I ended up factoring a perfect square and from then on it was easy
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