# Trigonometry – Grade 10 CBSE

There are few topics covered in this section:

1. Trigonometry – Introduction
2. Height & Distance
3. Trigonometric Identities

Click on each topic to know more details.

Trigonometry - Introduction
Key topics include:

• Angles
• Definition
• Positive (Anti Clockwise) & Negative (Clockwise) Angles
• Units of Measurements of Angles
• Measures of Angles in One Cycle
• Basic Trigonometric Ratios
• Trigonometric Ratios in a Right Angled Triangle
• Reciprocal Relations
• Quotient Relation of Trigonometric Ratio
• Power of Trigonometric Ratios
• Trigonometric Ratio of Some Standard Angles
• Trigonometric Ratios of 30 deg and 60 deg
• Trigonometric Ratios of 45 deg
• Axioms for Trigonometric Ratios of 0 deg
• Axioms for Trigonometric Ratios of 90 deg
• Trigonometric Ratios of 15 deg and 75 deg
• Trigonometric Identities
• Trigonometric Ratios of Complementary Angles
• Complementary Angles
• Properties of Complementary Angles
• Supplementary Angles
• Properties of Supplementary Angles
• Trigonometric Equations
• Equation sinA = sinB
• Equation cosA = cosB
• Equation tanA = tanB

Height & Distance
Key topics include:

• Line of Sight
• Angle of Elevation
• Angle of Depression
Trigonometric Identities
Key topics include:

• Basic Trigonometric Ratios
• Trigonometric Identities
• Trigonometric Equations

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