# Chapter 10: Trigonometric Identities

Notes (Solutions) of Chapter 10: Trigonometric Identities, Text Book of Algebra and Trigonometry Class XI (Mathematics FSc Part 1 or HSSC-I), Punjab Text Book Board, Lahore. There are four exercise in this chapter.

### Contents & summary

- Introduction
- Distance Formula
- Fundamental Law of Trigonometry

- Deductions from Fundamental Law
- Trigonometric Ratios of Allied Angles
- Exercise 10.1

- Further Application of Basic Identities
- Exercise 10.2

- Double angle Identities
- Half angle Identities
- Triple angle Identities
- Exercise 10.3

- Sums, Difference and Product of Sines and Cosines
- Exercise 10.4

### Solutions

- Exercise 10.2 | View Online | Download PDF (191.39 KiB, 24680 downloads)

- Exercise 10.3 | View Online | Download PDF (161.59 KiB, 16736 downloads)

- Exercise 10.4 | View Online | Download PDF (149.18 KiB, 18863 downloads)

### Short Questions

The following short questions was send by Mr. Akhtar Abbas.

- Chapter 10 | View Online | Download PDF (147.38 KiB, 8432 downloads)

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- fsc/fsc_part_1_solutions/ch10
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