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

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
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

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