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September 19, 2014

September 19, 2014

Posted by **Katie** on Monday, March 5, 2012 at 8:02pm.

- Trig -
**bobpursley**, Monday, March 5, 2012 at 8:11pmsquare both terms...

9cos^2+4sin^2-24cossin+16cos^2+24cossin+9sin^2=

9(cos^2+sin^2)+16(cos^2+sin^2)=

and you can finish it.

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