#### definition

Tignometry is the branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles.

#### notes

Trigonometry is the study of relationships between the sides and angles of a triangle. In this chapter, we will study some ratios of the sides of a right triangle with respect to its acute angles, called trigonometric ratios of the angle.We will also define the trigonometric ratios for angles of measure 0° and 90°. We will calculate trigonometric ratios for some specific angles and establish some identities involving these ratios, called trigonometric identities.

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

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Introduction to Trigonometry part 1 (Introduction)

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

00:12:12

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

00:12:47

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Introduction to Trigonometry part 4 (Examples)

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Introduction to Trigonometry part 5 (Examples)

00:09:12

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Introduction to Trigonometry part 6 (Examples)

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