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 35o and 55o. Find the distance between the two points of observation
- 10(sin 35o - sin 55o)
- 10 cos35o - cos 55o
- 10(tan35o - tan55o)
-
10(cot35o - cot55o)
The correct answer is: D
Explanation
x = 10 cot35o - 10 cot55o= 10(cot35o - cot55o)