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January 30, 2015

January 30, 2015

Posted by **Rei** on Wednesday, May 16, 2012 at 4:02pm.

a) cos π/8

b) sin π/8

c) cos π/4

d) sin π/4

Please explain the answer, thank you.

- product of function -
**Reiny**, Wednesday, May 16, 2012 at 4:31pmsince (fxg)(x) = 2cosxsinx

and 2sinxcosx = sin 2x

we would be finding sin(2(π/16)) = sin π/8

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