SOLUTION: Write the expression as an algebraic expression in x for x > 0. cos (1/2 arccos x)

Algebra ->  Trigonometry-basics -> SOLUTION: Write the expression as an algebraic expression in x for x > 0. cos (1/2 arccos x)       Log On


   

Question 931435: Write the expression as an algebraic expression in x for x > 0.
cos (1/2 arccos x)
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Write the expression as an algebraic expression in x for x > 0.
cos (1/2 arccos x)=cos(x/2)=±sqrt%28%281%2Bcosx%29%2F2%29