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Math Help - how can i solve this trig question?

  1. #1
    Junior Member
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    May 2005
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    25

    how can i solve this trig question?

    solve 11sin^2 y =13-3sin^2 y for y, where y is greater then 0 degrees but less than 360. how many angle satify this equation?
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  2. #2
    Member
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    You can perceive this as a quadratic equation 11 z^2 = 13 - 3 z^2 where  z = sin(y) , solve this eqn. (You'll get two answers), and solve for y for each answer.
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  3. #3
    Junior Member
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    May 2005
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    thanks

    thanks so much for the help
    i am doing moduals and there is no other way to get this much help
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