RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 30 of Very short answer

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30

Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

Write the value of .


Given cos-1 (cos 2π/4)


We know that cos-1 (cos θ) = θ


= 2π/4


= π/2


∴ cos-1 (cos 2π/4) = π/2


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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