passpadi

2008

Mathematics

JAMB

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

A.

184 m

B.

185 m

C.

186 m

D.

187 m

Correct Answer: 187 m

Explanation

Tan 20° = 68m/x x tan 20° = 68 x = 68/tan20 = 68/0.364 x = 186.8 = 187m

Tan 20° = 68m/x x tan 20° = 68 x = 68/tan20 = 68/0.364 x = 186.8 = 187m
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