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OpenStudy (anonymous):
Find the exact real value of arccos -squareroot2/2. pi/4 3pi/4 7pi/4 -pi/4 Okay so I found the degrees version of it which is 38.74 and I looked at my unit circle but I'm not sure how to get one of the choices from above. Thanks!
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OpenStudy (mertsj):
|dw:1373160986635:dw|
OpenStudy (anonymous):
Okay...Not sure what to do with this picture.
OpenStudy (mertsj):
Use the Pythagorean Theorem and find x
OpenStudy (anonymous):
10?
OpenStudy (mertsj):
|dw:1373161281680:dw|
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