SOLUTION: Evaluate each of the following.In each case,explain your thinking. cos^(-1)(cos(-π/6))

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Question 546264: Evaluate each of the following.In each case,explain your thinking.
cos^(-1)(cos(-π/6))
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Evaluate each of the following.In each case,explain your thinking.
cos^(-1)(cos(-π/6))
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The given problem asks to find the cos of an angle whose value is cos (-π/6)
Value of cos(-π/6)=√3/2 (in quadrant IV were cos>0)
cos^(-1)(cos(-π/6))
=cos^(-1)(√3/2)=π/6
remember: Domain of inverse cosine is (0,π), (quadrants I or II)