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March 28, 2015

March 28, 2015

Posted by **Anonymous** on Thursday, August 5, 2010 at 2:05pm.

- trig -
**Damon**, Thursday, August 5, 2010 at 2:52pm30 60 90 triangle has sides 1, sqrt3, 2

( 1^2 + 3 = 2^2)

therefore

sin 30 = 1/2 = cos 60

sin 60 = sqrt3 / 2 = cos 30

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