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SIMPLIFY SIN RAISE TO POWER 4 MINUS COS RAISE TO POWER4 DIVIDED BY 1 MINUS 2SIN RAISE TO POWER 2

  • MATHS -

    ever heard of math notation?

    (sin^4x-cos^4x)/(1-sin^2x)
    = (sin^2x+cos^2x)(sin^2x-cos^2x)/cos^2x
    = tan^2x-1

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