RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 3 of Exercise 4.3

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3

Evaluate each of the following:


We know that, for any x R, represent an angle in whose tangent is x.


,


and,


[


=


Now, becomes,


=


=


=


=


Therefore the principle value of is .


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