the angle of elevation of a jet fighter from a point A on the ground is 60 degree .after a flight of 15 seconds , the angle of elevation changes to 30 degree . if the jet is flying the speed of 720km/h . find the height at which jet is flying ? [root3=1.732]
Hi!
The given information can be represented using a figure as:
In this figur P is the point of observation. The line DCP is the ground. A and B are positions of the jet flighter.
Let the height at which the jet is flying be h
∴ BD = AC = h
Thus, the jet is flying at a height of 2598 m aove the ground.
Hope! This will help you.
Cheers!