Posted by Edan on Thursday, November 5, 2009 at 6:38pm.
I am not certain what I am seeing.
Is it
cos^2 60=1-2sin^2 30 ?
3/4=?=1-2*1/4
so it doesn't verify...so I must not be seeing the type clearly
This is exacly how the question goes, This is a test question.
1.Using exact values, verify that
cos 60°=1-2 sinē 30°
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