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Chapter 2 TRIGONOMETRIC IDENTITIES
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CBSE Class 10
Unit 5 Trigonometry
Chapter 2 TRIGONOMETRIC IDENTITIES Notes
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Chapter 1 INTRODUCTION TO TRIGONOMETRY
Trigonometric ratios of an acute angle of a right-angled triangle.
Proof of their existence (well defined)?
Motivate the ratios, whichever are defined at 0° and 90°?
Values (with proofs) of the trigonometric ratios of 30°, 45° and 60°?
Relationships between the ratios?
Chapter 3. HEIGHTS AND DISTANCES
Simple and believable problems on heights and distances.
Problems should not involve more than two right triangles.
Angles of elevation / depression should be only 30°, 45°, 60°.
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