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Thread: solving a trig equation

  1. February 16th 2011, 12:20 PM #1
    kassums17
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    solving a trig equation

    cos squared theta + sin theta + 1 = 0

    should I just use the quadratic formula first and go from there?
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  2. February 16th 2011, 12:29 PM #2
    e^(i*pi)
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    No, the quadratic formula is second.

    First change your \cos^2 \theta to \sin^2 \theta using the identity \sin^2 \theta + \cos^2 \theta = 1
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