Trig
posted by Don .
Column 1 Column 2
(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
(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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