Q. 65.0( 3 Votes )

Write the princip

Answer :

To find: the principal value of cot-1 (-√3)


Let y = cot-1 (-√3)


cot y = -√3


We know,


cot 30° = √3



{ cot θ = x cot (π - θ) = -x}




cot y = -√3




The range of principal value of cot-1 is (0, π)


Hence, the principal value of cot-1 (-√3) is


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