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OpenStudy (anonymous):
Find the exact value of each expression. No Calculator. (cos^2 pi/4) - (tan^2 pi/4)
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myininaya (myininaya):
cos(pi/4)=? tan(pi/4)=?
myininaya (myininaya):
this can be found on the unit circle
myininaya (myininaya):
|dw:1414367399678:dw|
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