Question

ive
A1.2 m tall girl spots a balloon moving
with the wind in a horizontal line at a
height of 88.2 m from the ground. The
angle of elevation of the balloon from
the eyes of the girl at any instant is
60°. After some time, the angle of
clevation reduces to 30° (see Fig. 9.13).
Find the distance travelled by the
balloon during the interval.
188.2 m
60°
30°
Fig. 9.13​

Answer 1

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