Tuesday
September 2, 2014

Homework Help: trig

Posted by Chris on Monday, May 18, 2009 at 8:34pm.

I do not understand for my life how to solve this problem.

Evaluate the expression without the aid of a calculator.

arccos[(-3^1/2)/2)

I'm not sure how my teacher did it. I know she said to find which quadrant that cos can be in and graph the triangle to find the angle.

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