Question

Jlespectively. Prove that S1 + S3 = 252
Erst term
sometime, the angle of elevation reduces to 30°.
(i) Find the distance travelled by the balloon during the interval.
(ii) Which mathematical concept is used in the above problem?
X
AI 29. A 1.2 m tall girl spots a balloon moving with the wind in a horizontal line at a height of 882 m from
the ground. The angle of elevation of the balloon form the edges of the girl at any instant of 60. which mathematical concept is used in above problem


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Answer 1

In △ACE,

CE

AE

=tan60

o

CE

88.2−1.2

=

3

CE=29

3

In △BCD,

CG

BG

=tan30

o

CG

88.2−1.2

=

3

1

CG=87

3

m

Balloon traveled distance =EG=GC−EC

=57

3

−22

3

=58

3

m

solution