SOLUTION: Simplify: cos^2(34)- sin^2(34) Please show the steps alongside it.

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Question 924106: Simplify: cos^2(34)- sin^2(34)
Please show the steps alongside it.
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
cos^2(34)-sin^2(34)
Identity: cos(2x)=cos^2(x)-sin^2(x)
cos^2(34)-sin^2(34)=cos(2*34)=cos(68)