SOLUTION: what is the exact value of cos(-130degrees)

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Question 307015: what is the exact value of cos(-130degrees)
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
cos(-130) = cos(130)
x = 130*pi/180 (130º in radians)
cos(x) = 1 - x^2/2 + x^4/4! - x^6/6! ...