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OpenStudy (anonymous):
Evaluate the arcos Sqrt (3)/2?
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OpenStudy (anonymous):
\[\cos ^{-1}\left(\frac{\sqrt{3}}{2}\right)=\frac{\pi }{6}=30 {}^{\circ} \]
OpenStudy (anonymous):
Thank You!
OpenStudy (jhannybean):
Draw out a triangle for yourself.
OpenStudy (jhannybean):
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