Access the official NCERT Class 10 Mathematics textbook for Chapter 9 – Some Applications of Trigonometry PDF. This chapter shows how trigonometric ratios (sin, cos, tan) solve real-world problems involving heights and distances, introducing key concepts like line of sight, angles of elevation and depression, and structured techniques to compute heights of towers, lengths of ropes, and more—without physically measuring them.
Chapter Highlights:
- Understanding line of sight, angle of elevation & angle of depression
- Apply sin, cos, tan in height and distance problems
- Single-step scenarios: towers, trees, ropes at standard angles (30°, 45°, 60°)
- Multi-step setups: platforms, ladders, buildings on buildings
- Real-life applications: architecture, navigation, surveying
- 16 NCERT problems with step-by-step trigonometric solutions