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February 1, 2015

February 1, 2015

Posted by **Kelly** on Wednesday, March 30, 2011 at 9:07pm.

- Trig -
**bobpursley**, Wednesday, March 30, 2011 at 9:31pmYou have to be kidding. 8PI/15

what is the exact angle of arccosine (cosine PI)? Answer: PI

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