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Pre Cal

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simplify the expression 2sin^2 t + cos^2 t-2

  • Pre Cal - ,

    2sin^2 t + cos^2 t-2
    =2sin^2t + 1 - sin^2t - 2
    =sin^2t - 1

    which could be factored to
    (sinx+1)(sinx-1)

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