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Thread: trig identities

  1. January 13th 2009, 04:15 PM #1
    shanzwhaat
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    trig identities

    csc^2x - 2cotx = 0
    in [0degree, 360degree) intervel
    find x ?
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  2. January 13th 2009, 04:19 PM #2
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    Quote Originally Posted by shanzwhaat View Post
    csc^2x - 2cotx = 0
    in [0degree, 360degree) intervel
    find x ?
    \frac{1}{\sin^2{x}} - \frac{2\cos{x}}{\sin{x}} = 0

    1 - 2\cos{x}\sin{x} = 0

    1 - \sin{2x} = 0.


    I trust you can go from there.
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  3. January 13th 2009, 04:21 PM #3
    shanzwhaat
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    YUP i can.. thanks so much!!!
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