A boy looks through a window of a building and sees a mango fruit on...
MATHEMATICS
WAEC 2011
A boy looks through a window of a building and sees a mango fruit on the ground 50m away from the foot of the building. If the window is 9m from the ground, calculate, correct to the nearest degree, the angle of depression of the mango from the window
- A. 9°
- B. 10°
- C. 11°
- D. 12°
Correct Answer: B. 10°
Explanation
tan \(\theta\) = \(\frac{9}{50}\) = 0.18
\(\theta = tan^{-1} 0.18\)
\(\theta\) = 10.20
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