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April 21, 2015

April 21, 2015

Posted by **Don** on Saturday, December 17, 2011 at 4:35pm.

(sin theta + cos theta)sq

1 + 2sin theta cos theta

Question : how do you get column 1 to be the same as column 2?? using the trig identities

- Trig -
**Damon**, Saturday, December 17, 2011 at 4:43pm(sin t + cos t)^2 = 1 + 2 sin t cos t ???

sin^2T + 2 sin t cos t + cos^2 t =

but sin^2 t + cos^2 t = 1 identity

so

1 + 2 sin t cos T

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