What is inverse #cot^-1(-sqrt(3))#?

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Mar 6, 2015

#cot^-1(-sqrt(3))= (5pi)/6 #

When you are solving inverse trigonometry functions, you have to ask yourself the following question: Where does the cotangent function equal #-sqrt(3)#?

Remember to use your unit circle (in radians).
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Because cotangent is equal to #cos/sin#, you can see that the inverse cotangent of #-sqrt(3)# is #(5pi)/6#.

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