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OpenStudy (anonymous):
Evaluate cos^-1[sin(pi/7)]
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OpenStudy (anonymous):
0.90733988115 I got this as my answer, hope it helps! if you are wondering how I just googled calculator and used the google calculator to input the equation.
OpenStudy (anonymous):
so it can only be solved by a calculator? thanks :)
OpenStudy (anonymous):
Er yea I would say so, using sin/cos/etc is not easy at all without one.
OpenStudy (anonymous):
thanks :)
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