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October 26, 2014

October 26, 2014

Posted by **sarah** on Monday, November 21, 2011 at 7:18pm.

- trigonometry -
**Steve**, Tuesday, November 22, 2011 at 5:05amcsc 120° = 1/sin 120°

sin 120° = sin 60° = √3/2

so, csc 120° = 2/√3

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