Find the principal values of each of the following:
cot–1(√3)
Let cot–1(√3) = y
⇒ cot y = √3
= cot
= √3
The range of principal value of cot–1is (0, π)
and cot
= √3
∴ The principal value of cot–1(√3) is 
1
Find the principal values of each of the following:
cot–1(√3)
Let cot–1(√3) = y
⇒ cot y = √3
= cot = √3
The range of principal value of cot–1is (0, π)
and cot = √3
∴ The principal value of cot–1(√3) is