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April 1, 2015

April 1, 2015

Posted by **Anonymous** on Friday, December 9, 2011 at 11:36am.

- trig -
**Reiny**, Friday, December 9, 2011 at 11:50amso x = 20 , y = -21 , which is in quad IV

r^2= 400+441 = 841

r = √841 = 29

then cos Ø = 20/29

sec Ø = 29/20 = 1.45

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