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shubham bhattacharyya

· started a discussion

· 1 Months ago

error in question (Question:458585.0)

it should be informed that in same direction.if in opposite direction then 400 is also correct.plz reply

Question:

The angle of elevation of an aeroplane from a point on the ground is 60o. After 15 seconds flight, the elevation changes to 30o, if the aeroplane is flying at a height of 1500 3    m, find the speed of the plane.

Options:
A)

400 m/sec

B)

200 m/sec

C)

100 m/sec

D)

150 m/sec

Solution:

Ans (b)

  

Knowledge Expert

· commented

· 1 Months ago

Dear Student,
The required changes has been done.
Keep learning with us
Thank You
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