RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 29 of MCQ

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29

Choose the correct answer


We need to find the value of


Let 2 cot-1 3 = y


Then,




Substituting 2 cot-1 3 = y,



Using the trigonometric identity,



So,



We know that,



…(i)


We know that, by trigonometric identity,



Take reciprocal of both sides,








Put y = y/2.



Putting the value of cot y in equation (i),





Put the value of derived above and also .





=7

Chapter Exercises

Exercise 4.1
Exercise 4.2
Exercise 4.3
Exercise 4.4
Exercise 4.5
Exercise 4.6
Exercise 4.7
Exercise 4.8
Exercise 4.9
Exercise 4.10
Exercise 4.11
Exercise 4.12
Exercise 4.13
Exercise 4.14
Very short answer
MCQ

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