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Math Help - 0.8 = 0.8cos(t) - 1.2sin(2t)

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    0.8 = 0.8cos(t) - 1.2sin(2t)

    0.8 = 0.8cos(t) - 1.2sin(2t)

    How would I solve this?
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    Quote Originally Posted by kmjt View Post
    0.8 = 0.8cos(t) - 1.2sin(2t)

    How would I solve this?
    This is trig, not calculus.

    Either way you should use the identity \sin(2t) = 2\sin(t) \cos(t)

    2.4 \sin(t) \cos(t) - 0.8\cos(t) + 0.8 = 0

    This will factor
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