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OpenStudy (anonymous):
Solve for cos^2x=3/4
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OpenStudy (anonymous):
but that's for cos^2x and it's equal to 3/4..how would you do that ?
OpenStudy (anonymous):
cos^2(x) is the same as saying (cosx)^2
OpenStudy (anonymous):
how do we account for the 3/4 part?
OpenStudy (anonymous):
(cosx)^2=3/4 cosx=sqrt(3/4) cosx=sqrt(3)/2 x=cos-1(0.866025) x=0.523599 Correct me if im wrong. Do you know the answer?
OpenStudy (anonymous):
no unfortunately I don't have the answer but thank you for helping and I'll try that.
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OpenStudy (anonymous):
Trust me there is no other way.
OpenStudy (anonymous):
Thanks a lot for your help!
OpenStudy (anonymous):
i think 30 degree is the ans
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