SOLUTION: If cos(x)=-1/3 then cos(x/2)=?

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Question 983798: If cos(x)=-1/3 then cos(x/2)=?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




Plug in your value and do the arithmetic.

John

My calculator said it, I believe it, that settles it