document.write( "Question 307015: what is the exact value of cos(-130degrees) \n" ); document.write( "
Algebra.Com's Answer #219613 by Alan3354(69443)\"\" \"About 
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cos(-130) = cos(130)
\n" ); document.write( "x = 130*pi/180 (130º in radians)
\n" ); document.write( "cos(x) = 1 - x^2/2 + x^4/4! - x^6/6! ...
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