A ladder leaning against a wall makes an angle of 60° with the ground. If the length of the ladder is 19 m… · ABC26GN5427
Subject: General Aptitude · Chapter: Heights and Distances
A ladder leaning 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. B
Answer
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Explanation
Let AB be the wall and BC be the ladder. Then, ∠ ACB = 60° and BC = 19 m. m 19 Let AC = x metres AC x 1 19 = cos 60° ⇒ = ⇒ x = = 9.5. BC 19 2 2 60° C x A ∴ Distance of the foot of the ladder from the wall = 9.5 m.
Explanation as extracted from the printed page; notation may be imperfect.