CBSE Class 10 Mathematics Standard sample paper 2026-27: question 17
From the official CBSE sample question paper for 2026-27, section A, question 17, for 1 mark. Try it first; the hints and our step-by-step solution are below.
Q17 · 1 mark · MCQCompetency-basedSome Applications of Trigonometry
A flying kite is tied to a point on the ground with the help of a string. The string makes an angle with the ground level such that . If the length of the string is 52 m, then the height of the kite above the ground is:
- (A)40 m
- (B)45.5 m
- (C)48 m
- (D)50 m
Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2026-27.
Hints
Open one hint at a time and try again before the next.
Hint 1
The string is the hypotenuse of the right triangle.
Hint 2
Convert tan θ into sin θ.
Step-by-step solution
Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.
, so the sides are in the ratio 12 : 5 and the hypotenuse is . This gives .
- 1 mark
The string is the hypotenuse: m, which is option (C).
Answer: 48 m, option (C)
Where the marks are
- Finds sin θ = 12/13 and gets h = 48 m (1 mark)
Revise the chapter
- Chapter: Some Applications of Trigonometry (notes, formulas, where marks are lost and every past question)
- Topic: Line of Sight and Angle of Elevation
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