Subject
Quantitative Aptitude
Topic
Speed & Distance
The angle of elevation of a ladder leaning against a wall is 60º and the foot of the ladder is 6 m away from the wall. The length of the ladder is:
The angle of elevation of a ladder leaning against a wall is 60º and the foot of the ladder is 6 m away from the wall. The length of the ladder is:
ক)
2.3 mখ)
4.6 mগ)
7.8 mঘ)
9.2 mExplanation
Let, AB be the wall and BC be the ladder. Then, ÐABC = 600 and AC = 4.6 m. AC/BC = cos 600 = ½ => BC = 2×AC = (2×4.6) mRelated questions
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