Trigonometryhard · Past Paper
If a pole of height h is at the center of a square of side 'a', and θ is elevation of its top from a corner, then:
Atan θ = 2h / (a√2)
Btan θ = h / a
Ctan θ = h√2 / a
Dtan θ = h / (a√2)
✓ Correct Answer: A — tan θ = 2h / (a√2)
Distance from center to corner is (a√2)/2. tan θ = h / (a√2/2) = 2h / (a√2).
Share this question
More from Trigonometry
- Simplify: cos^2 A + cos^2(A+120) + cos^2(A-120).
- A man in a boat moving away from a cliff 100 m high takes 2 mins for elevation to change from 60 to 30. Speed?
- If tan A = x, then sin 2A is:
- If A + B + C = 180, then tan A + tan B + tan C is equal to:
- If A + B + C = 180°, find value of cot B cot C + cot C cot A + cot A cot B.