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    tan(a^2)=90-a
    tan(a^2)=a
    tan(a^2)=a
    tana=a^2
    tana^2=a
    cosa=1-a
    cosa=90-a
    (cosa)^2=a
    (cosa)=a^2
    sina=a^2
    sina=a^2
    (sinx)^2=x
    sinx=x^2
    e^x=x^2 99990e/47
    e^x=x^2 99990e
    e^x=x^2
    e^x=x
    cosx=e^x
    (cosx)^2=x
    x=cosx

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