Just wondering about the validity of this answer obtained via using an identity?

A second opinion would be much appreciated! Thanks.

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- February 22nd 2013, 05:06 AMDonGorgonBasic trigonometric integral question
Just wondering about the validity of this answer obtained via using an identity?

A second opinion would be much appreciated! Thanks. - February 22nd 2013, 06:23 AMhollywoodRe: Basic trigonometric integral question
Looks good to me.

- Hollywood - February 22nd 2013, 06:58 AMProve ItRe: Basic trigonometric integral question