Posted by **Rick** on Thursday, February 28, 2008 at 1:43pm.

Graph one complete cycle of

y + cos x cos pi over6 + sin x sin pi/6 by first rewriting the right side in the form cos(A-B)

- trig -
**Reiny**, Thursday, February 28, 2008 at 4:20pm
You probably meant to write

y = cos x cos pi over6 + sin x sin pi/6 which is

y = cos(x - pi/6)

first sketch very faintly, perhaps as a dotted line, the function y = cosx from 0 to 2pi

then move this graph pi/6 units to the right.

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