Introduction to Trignometry – Notes
Trigonometric Ratios and Angles
Trigonometry is the study of relationship between the angles and sides of triangles.
The ratios between the lengths of the sides of a right-angled triangle are relation with its acute angles is called trigonometric ratios.
N a right-angled triangle ABC, if ÐA is an acute angle:
- Sin ÐA
- Cos
- Tan ÐA
- Cosec ÐA
- Sec ÐA
- Cot ÐA
If we know the value of any one of the trigonometric ratios of an acute angle in a right-angled triangle, we can calculate other trigonometric ratios of the angle.
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CBSE Class 10th Maths 8 - Introduction to Trignometry - Notes
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