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OpenStudy (anonymous):
Solve the equation on the interval [0, 2pi) : 12cos^2x-9=0 ***I'm not sure how to do this.. It's kinda confusing :/ Please explain? Like the steps and how to get to the solution? :) Thank you!!
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OpenStudy (anonymous):
add 9, divide by 12, take the square root, don't forget the \(\pm\)
OpenStudy (anonymous):
|dw:1364580593665:dw| i drew it also in case its hard to decipher above :)
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