RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 24 of MCQ

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24

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If , then the value of x is


We are given that,

4 cos-1 x + sin-1 x = π …(i)


We need to find the value of x.


Using the property of inverse trigonometry,




Replacing θ by x, we get



Substituting the value of sin-1 x in (i),


4 cos-1 x + sin-1 x = π








Taking cosines on both sides,




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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