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    SaLiyah's Avatar
    SaLiyah Posts: 1, Reputation: 1
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    #1

    Mar 24, 2012, 10:40 AM
    Precalculus
    Verify working with one side only:
    sin^2x-1=-cos^2x
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Mar 26, 2012, 05:34 AM
    You can apply the identity sin^2x + cos^2x =1 to resolve this.
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