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April 1, 2015

April 1, 2015

Posted by **kate** on Monday, May 18, 2009 at 10:50pm.

tan 180 degrees

- pre calc need help -
**Reiny**, Monday, May 18, 2009 at 11:01pmthink of a rotating arm of length 1 rotating about the origin (0,0)

at 180º the end of the arm will land on (-1,0)

tan (theta) = y/x

tan 180 = 0/-1 = 0

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