9. A ladder learning against a wall makes an
angle of 60° with the ground. If the length of the ladder is 19 m, find the
distance of the foot of the ladder from the wall.
A. 9 m B. 9.5 m
C.
10.5 m D. 12 m
Answer:
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Let AB be the
wall and BC be the ladder.
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Then, < ABC
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= 60°
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and, BC
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= 19 m.;
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AC = x metres
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AC/BC
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= cos 60°
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= x / 19
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=1 / 2
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x= 19/2
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= 9.5 m.
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Title :
Heights Q9
Description : 9. A ladder learning against a wall makes an angle of 60° with the ground. If the length of the ladder is 19 m, find the distance of the ...
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