since secant is hypotenuse over adjacent sine theta must be

the book has a nine in the denominator and I can't figure out where it comes from.

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- Oct 3rd 2012, 06:32 PMbkbowserintegration by trigonometric substitution.

since secant is hypotenuse over adjacent sine theta must be

the book has a nine in the denominator and I can't figure out where it comes from. - Oct 3rd 2012, 07:25 PMSorobanRe: integration by trigonometric substitution.
Hello, bkbowser!

You dropped a along the way.

Quote:

Let

Substitute: .

. . . . . . . . .