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A student sitting on a tower 68 metres high observes his principal's car at the...

Mathematics
JAMB 2008

A student sitting on a tower 68 metres high observes his principal's car at the angle of depression of 20o. How far is the car from the bottom of the tower to the nearest metre?

  • A. 184m
  • B. 185m
  • C. 186m
  • D. 187m
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Correct Answer: Option D
Explanation

Tan 20º = \(\frac{68m}{x}\)

x tan 20º = 68

x = \(\frac{68}{tan 20}\) = \(\frac{68}{0.364}\)

x = 186.8

= 187m

There is an explanation video available below.


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Explanation Video

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