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September 16, 2014

September 16, 2014

Posted by **Leslie** on Tuesday, March 6, 2012 at 5:48pm.

1. (cosX)(cosX+1)=0

2. 2sin^2(X)-3sinX=2

- Math -
**Henry**, Wednesday, March 7, 2012 at 7:42pmSince the product = 0,

cosX = 0.

X = 90 Deg.

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