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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
##### 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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