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Math Help - trig identities

  1. #1
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    trig identities

    I have to solve for X and am not sure where to start

    questions:

    cos2x +sin (squared root) x=0
    where: sin(squared root) =1-cos(squared root)x

    and

    2 sin 4x + csc 4x =3
    where csc=1/sinx

    please, if anyone can give me a hand it would be much appreciated. Also, as I am a new user, could someone tell me where to find a squared root symbol?
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  2. #2
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    Quote Originally Posted by muffin353 View Post
    I have to solve for X and am not sure where to start

    questions:

    cos2x +sin (squared root) x=0
    where: sin(squared root) =1-cos(squared root)x

    and

    2 sin 4x + csc 4x =3
    where csc=1/sinx

    please, if anyone can give me a hand it would be much appreciated. Also, as I am a new user, could someone tell me where to find a squared root symbol?
    2. Multiply everything out by \sin{4x} to get a quadratic equation that you can solve.

    Once you're in LaTeX mode, the code for a square root is


    sqrt{}


    and whatever is underneath the square root symbol goes inside the curly brackets.
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