Listen NCERT Audio Books to boost your productivity and retention power by 2X.
Evaluate each of the following:
The value of cot is 1.
∴ The question becomes cot–1(1).
Let cot–1(1) = y
⇒ cot y = 1
= cot = 1
The range of principal value of cot–1is (0, π)
and cot = 1
∴ The value of cot–1(cot) is .