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Calculus1
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OpenStudy (anonymous):
Evaluate without using a calculator arccos1/2
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OpenStudy (anonymous):
Is the answer by any chance pi/4
OpenStudy (ipwnbunnies):
via @sourwing "one of those trig values that you need to memorize." arccos(1/2) = pi/3
OpenStudy (ipwnbunnies):
This triangle is helpful to memorize.
OpenStudy (anonymous):
you good on this?
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