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July 28, 2014

July 28, 2014

Posted by **Dani** on Thursday, March 7, 2013 at 10:19pm.

cot è = 1/2 , sin è < 0

- Math Pre Cal -
**Steve**, Friday, March 8, 2013 at 5:06amcot = 1/2

cot > 0 in QI,QIII

sin < 0 in QIII,QIV

so, we are in QIII and x<0, y<0

r = √5, so

cot = x/y = -1/-2

sin = y/r = -2/√5

cos = x/r = -1/√5

...

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