Class 10 Chapter 9 Applications Of Trigonometry Previous Year Questions
Use this chapter hub to revise Applications Of Trigonometry through topic-wise previous year questions. These links help students move from chapter-level revision to focused CBSE board exam practice.
Topic-wise PYQ Practice
CBSE Board Exam Blueprint & Topic Weightage: Applications of Trigonometry (Heights and Distances)
In the Class 10 CBSE Board Examination, Applications of Trigonometry (Heights and Distances) is a high-yielding component of Unit 5: Trigonometry, consistently carrying 4 to 5 marks in the annual 80-mark written board paper. Recurring question formats observed over past board papers include:
- Section C / D (3 to 5 Marks Word Problem): Calculating heights of towers, poles, and multi-storey buildings or widths of rivers given angles of elevation and depression from single or dual observation points.
- Section E (4 Marks Case Study): Real-world scenarios such as air-traffic control observing planes, maritime lighthouse observations of incoming ships, or kite flying string angle measurements.
Key Revision Tips & Common Pitfalls
A correct geometric diagram constitutes 50% of the solution in heights and distances problems. Clearly distinguish between angle of elevation (looking upwards from horizontal line of sight) and angle of depression (looking downwards from horizontal line of sight). Use \(\sqrt{3} \approx 1.732\) only when specified in the question.