Calc II: Trig Sub Rules

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5 Terms

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Trig sub rule 1

sqrt(a^2-x^2), x=asin0

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Trig sub rule 2

sqrt(a^2+x^2), x=atan0

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Trig sub rule 3

sqrt(x^2-a^2), x=asec0

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Strategy for substituting x back in

SOH CAH TOA

5
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x/2=sin0

0=sin^-1(x/2)