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Some Applications of Trigonometry
CBSE 2026 Board Exam Set 2 (Code 30/1/2)
CBSE_BOARD_PYQ_2026_30_1_2
Grade 10
Question:
[Section E]
Case Study 3: Lighthouse Observation
Top of $75$ m high lighthouse, angles of depression of two ships are $30^\circ$ and $45^\circ$.
1. Draw diagram. (1 Mark)
2. Distance of nearer ship. (1 Mark)
3. Distance between ships. (2 Marks)
Case Study 3: Lighthouse Observation
Top of $75$ m high lighthouse, angles of depression of two ships are $30^\circ$ and $45^\circ$.
1. Draw diagram. (1 Mark)
2. Distance of nearer ship. (1 Mark)
3. Distance between ships. (2 Marks)
Step-by-Step Solution
Key Concept: Right triangles.
1. Diagram. 2. 75 m. 3. 54.9 m. [4.0 Marks]
Correct Answer: 1. Diagram, 2. 75 m, 3. 54.9 m
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