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April 18, 2015

April 18, 2015

Posted by **Salman** on Friday, February 5, 2010 at 6:24pm.

- Calculus -
**Damon**, Friday, February 5, 2010 at 9:23pmTriangle with two sides of length 8.5 and one of length 9

side 1 origin to (0,8.5 ), length 8.5

side 2, (0,8.5) to P, length 8.5

side 3, origin to P, length 9 (this is r of course)

find angle in triangle at origin

cos A = 4.5/8.5

find A from that

then

Theta = 90-A in degrees or pi/2 - A if using radians

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