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Math Help - Really easy question about how to find several angles.

  1. #1
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    Really easy question about how to find several angles.

    Hello, i think i am missing a key part of trig. I am sure it is easy, but i can not seem to find material on it. for 2sin(theta)^2=sin(theta) the answer is 0, Pi, pi/6. 5pi/6. I know how to find Pi/6, but I am not sure where to get the other answers.

    Thank you for any help provided.
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  2. #2
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    2\sin^2\theta =\sin\theta

    2\sin^2\theta-\sin\theta=0

    \sin\theta(2\sin\theta -1)=0

    Now

    \sin\theta=0 and 2\sin\theta -1=0

    Can you finish it?
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  3. #3
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    yeah, I see what i forgot to do. Thank you for showing me.
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