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April 21, 2015

April 21, 2015

Posted by **stacey graham** on Friday, March 26, 2010 at 9:24am.

tan(B+C)

- trig -
**Reiny**, Friday, March 26, 2010 at 9:49amsee reply to

http://www.jiskha.com/display.cgi?id=1269577464

and use the tan(B+C) expansion formula

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