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OpenStudy (anonymous):

Help please, it is much appreciated(: To solve cos^-1(cos(-π/6)), what is the angle in the interval [0,π] whose cosine is (√3)/2 ?

OpenStudy (cybershadow):

cosPi/6 is = sqrt(3)/2 and it is in the interval [0,pi] , so it is Pi/6 , if dats what u were asking for?

OpenStudy (anonymous):

Shouldn't the negative sign be on there somewhere? .-.

OpenStudy (cybershadow):

no because its in the interval [o,pi]

OpenStudy (ybarrap):

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