SOLUTION: Find the exact value of cos {{{11pi/6}}}. Some quick help would be greatly appreciated. :)

Algebra ->  Trigonometry-basics -> SOLUTION: Find the exact value of cos {{{11pi/6}}}. Some quick help would be greatly appreciated. :)      Log On


   

Question 751017: Find the exact value of cos 11pi%2F6.
Some quick help would be greatly appreciated. :)
Found 2 solutions by kathydots21, stanbon:
Answer by kathydots21(7) About Me  (Show Source):
You can put this solution on YOUR website!
http://www.mathway.com/answer.aspx?p=trig?p=cos%2811SMB19SMB106%29?p=358?p=?p=?p=?p=?p=0?p=?p=0?p=?p=?p=FindSMB15theSMB15ExactSMB15Value
go here

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the exact value of cos{11pi/6}.
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(11/6)pi is the same as -pi/6
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So, cos(11pi/6) = cos(-pi/6) = cos(pi/6) = sqrt(3)/2
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Cheers,
Stan H.
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