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February 28, 2015

February 28, 2015

Posted by **Nathan** on Sunday, May 22, 2011 at 5:35pm.

- Trig -
**Henry**, Sunday, May 22, 2011 at 7:38pmcos(theta)>0 in Q1, and Q4.

tan(theta)<0 in Q2, and Q4.

Q4 satisfies both conditions. Therefore, angle theta lies in Q4.

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