Physics, asked by radhikap1984, 11 months ago

angle of elevation of an aeroplane from a point The angle of elevation of an aeroplane on the ground is 60 . after a flight of 15 seconds horizontally, the angle of elevation changes to 30 . if the aeroplane is flying at a speed of 200 m per sec , then find the constant height at which the aeroplane is flying. NOT FOR SPAMMERS!!!!!

Answers

Answered by Anonymous
3

Answer:

ANSWER

Height of aeroplane =BD=CE=1500¶3

m and

∠BAE=60

0

and CAE=30

0

In triangle ADB

tan60

0

=

AD

1500

3

3

=

AD

1500

3

⇒AD=1500 m

In triangle CAE

tan30

0

=

AE

1500

3

3

1

=

AD

1500

3

⇒AE=1500×3=4500 m

Distance covered by plane in 15 seconds: BC=DE=AE−AD=4500−1500=3000 m

Speed of aeroplane =

15

3000

=200 m/s=720 km/hr

Answered by Anonymous
3

Answer:

Your answer is :-

Explanation:

720 km/hr.

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