RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 6 of Exercise 4.7

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6

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 .


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