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OpenStudy (anonymous):
Find the exact value cos-1(rad3/2)
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OpenStudy (anonymous):
do u mean cos-1 (sqrt(3)/2)
OpenStudy (anonymous):
hint : cos 30 = sqrt(3/2)
OpenStudy (anonymous):
Yes I did, sorry :/
OpenStudy (anonymous):
So it's 30?
OpenStudy (anonymous):
pi/6 then?
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OpenStudy (anonymous):
Nevermind :) Got it! Thanks for the hint, it helped
OpenStudy (anonymous):
yw
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