Problem: If , then show that
The given expression reduces to
Hence replacing in the required expression we get
- What is this topic: Trigonometry
- What are some of the associated concept: Change of Variables
- Where can learn these topics: Cheenta I.S.I. & C.M.I. course, discusses these topics in the ‘Trigonometry’ module.
- Book Suggestions: Trigonometry Volume I by S.L. Loney