SOLUTION: cosine theta= - (radical 2 divided by 2) what is theta?

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Question 334343: cosine theta= - (radical 2 divided by 2) what is theta?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Take a look at the unit circle:



In the unit circle, the -coordinate represents the value of cosine.

Since you didn't specify an interval for ,



or



where

John

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