SOLUTION: I have to simplify an expression using a double angle formula. the expression is 2cos^2(41)-1 would the simplification be cos(82)?

Question 761119: I have to simplify an expression using a double angle formula. the expression is
2cos^2(41)-1 would the simplification be cos(82)?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
I have to simplify an expression using a double angle formula. the expression is
2cos^2(41)-1 would the simplification be cos(82)?
**
Identity:

so, you got the correct answer
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