The pilot of an aeroplane, flying 10km above the ground in the direction of a...

JAMB 1989

The pilot of an aeroplane, flying 10km above the ground in the direction of a landmark, views the landmark to have angles of depression of 35^o and 55^o. Find the distance between the two points of observation

A. 10(sin 35^o - sin 55^o)
B. 10 cos35^o - cos 55^o
C. 10(tan35^o - tan55^o)
D. 10(cot35^o - cot55^o)

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Correct Answer: Option D

Explanation

x = 10 cot35^o - 10 cot55^o

= 10(cot35^o - cot55^o)

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The pilot of an aeroplane, flying 10km above the ground in the direction of a...

Correct Answer: Option D

Explanation

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