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August 3, 2015

Homework Help: trig

Posted by donny on Friday, April 30, 2010 at 9:08pm.

can someone please help me with this problem. i'm doing my review right now and i'm stuck?

Find cos(s + t) given that cos s = 1/3, with s in quadrant 1, and sin t = -1/2, with t in quadrant 4.

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