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A stationary boat is observed from a height of 100m. If the horizontal distance between...

Mathematics
WAEC 2017

A stationary boat is observed from a height of 100m. If the horizontal distance between the observer and the boat is 80m, calculate, correct to two decimal places, the angles of depression of the boat from point of observation

  • A. 36.87\(^o\)
  • B. 39.70\(^o\)
  • C. 51.34\(^o\)
  • D. 53.13\(^o\)
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Correct Answer: Option C
Explanation

Tan \(x^o = \frac{100m}{80}\)

Tan \(x^o = Tan^{-1} 1.25\)

x = 51.34\(^o\)

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