The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 away from the wall. The length of the ladder is:
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the length of ladder is 2.3 cm
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Hello$$
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Let , AB is the wall
BC is the ladder
AC is the distance between the foot of the ladder and building, which is = 4.6 m
Angle ACB = 60°
Now , from Right triangle ABC
Cos 60° = AC / BC
1/2 = 4.6 / l
l = 4.6 × 2
l = 9.2
Therefore, length of the ladder = 9.2 m
Thanks..
_________________________
Let , AB is the wall
BC is the ladder
AC is the distance between the foot of the ladder and building, which is = 4.6 m
Angle ACB = 60°
Now , from Right triangle ABC
Cos 60° = AC / BC
1/2 = 4.6 / l
l = 4.6 × 2
l = 9.2
Therefore, length of the ladder = 9.2 m
Thanks..
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