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Precalculus with Trig

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Rewrite the following expression as an algebraic expression in x:

cos(arcsin(x))

  • Precalculus with Trig -

    make a sketch of a rightangled triangle
    label the base angle Ø, then opposite side is x
    hypotenuse is 1
    then the adjacent side is √(1 - x^2)

    so cos(arcsin(x)) = √(1-x^2)1

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