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December 18, 2014

December 18, 2014

Posted by **Lisa** on Saturday, July 3, 2010 at 2:04pm.

- trig -
**Damon**, Saturday, July 3, 2010 at 4:54pm7/3 = 2 1/3

2 pi is a full circle

so we have gone around clockwise two circles and pi/3

so we really want cos (-pi/3)

draw a picture of that,60 degrees below the x axis in quadrant 4

the cosine is cos -60 degrees which is 1/2

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