RD Sharma Solutions for Class 12 Maths Exercise 4.13 of Chapter 4 Inverse Trigonometric Functions in PDF are available here. Students can refer to and download them from the available links. This exercise has four main questions. RD Sharma Solutions for Class 12 provide solutions for all topics covered in this exercise. This exercise deals with the properties of inverse trigonometric functions with a step-wise explanation.
RD Sharma Solutions for Class 12 Chapter 4 – Inverse Trigonometric Functions Exercise 4.13
Access answers to Maths RD Sharma Solutions for Class 12 Chapter 4 – Inverse Trigonometric Functions Exercise 4.13
Exercise 4.13 Page No: 4.92
1. If cos-1 (x/2) + cos-1 (y/3) = α, then prove that 9x2 – 12xy cos α + 4y2 = 36 sin2 α
Solution:
Given cos-1 (x/2) + cos-1 (y/3) = α
Hence, proved.
2. Solve the equation: cos-1 (a/x) – cos-1 (b/x) = cos-1 (1/b) – cos-1 (1/a)
Solution:
Given cos-1 (a/x) – cos-1 (b/x) = cos-1 (1/b) – cos-1 (1/a)
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