Institute: Central Board of Secondary Education (CBSE)

Subject: Mathematics

Topic: Trigonometry - Introduction to Trigonometry

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#### shaalaa.com | Introduction to Trigonometry part 1 (Introduction)

#### Series 1: playing of 11

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Trigonometry

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Introduction to Trigonometry part 1 (Introduction)

00:07:54

00:07:54

Introduction to Trigonometry part 2 (Sin, Cos, Tan Intro)

00:12:12

00:12:12

Introduction to Trigonometry part 3 (Relation between Sin Cos Tan)

00:12:47

00:12:47

Introduction to Trigonometry part 4 (Examples)

00:11:01

00:11:01

Introduction to Trigonometry part 5 (Examples)

00:09:12

00:09:12

Introduction to Trigonometry part 6 (Examples)

00:13:17

00:13:17

Introduction to Trigonometry part 7 (30 , 45 degree ratio)

00:10:58

00:10:58

Introduction to Trigonometry part 8 (0, 90 degree ratio)

00:12:31

00:12:31

Introduction to Trigonometry part 9 (Examples)

00:07:13

00:07:13

Introduction to Trigonometry part 10 (Ratio complementary angle)

00:10:14

00:10:14

Introduction to Trigonometry part 11 (Examples)

00:14:15

00:14:15

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(if you have any topic related video then share link with us)### Description

- Trigonometric ratios of an acute angle of a right-angled triangle.
- Proof of their existence (well defined); motivate the ratios whichever are defined at 0o and 90o.
- Values (with proofs) of the trigonometric ratios of 300, 450 and 600.
- Relationships between the ratios.