Question

an airplane receives a signal from a point 'x' on the ground. If the angle of depression of point 'x' from the plane is 30degree, calculate the height at which the plane is flying.

Answer 1

Answer:

REF.Image

tan60

∘

=

x

3000

3

x=

3

3000

3

=3000m

tan30

∘

=

1/

3

3000

3

=9000m

distance covered = 9000- 3000

= 6000 m.

speed =

30

6000

=200m/s

solution