SOLUTION: Using the exact values, verify that cos 60 degrees = 1-2 sin^2 30 degrees I need help in this quetion, thanks (:

SOLUTION: Using the exact values, verify that cos 60 degrees = 1-2 sin^2 30 degrees I need help in this quetion, thanks (:

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Question 301377: Using the exact values, verify that cos 60 degrees = 1-2 sin^2 30 degrees

I need help in this quetion, thanks (:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Using the exact values, verify that cos 60 degrees = 1-2 sin^2 30 degrees
------------------
cos(60) = 1/2
sin(30) = 1/2

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