SOLUTION: how do you simplify 2cos^2 25 -1 using the double angle formula

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Question 1017050: how do you simplify 2cos^2 25 -1 using the double angle formula
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Using , if x = 25, then 2x = 50. So the simplified form is .