A ladder is placed against a wall such that it just reaches

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SSC CGL Tier-2 9-March-2018 Maths-shift-1
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MATH

56

M: +3.00/-0.00

A ladder is placed against a wall such that it just reaches the top of the wall. The foot of the ladder is at a distance of 5 metres from the wall. The angle of elevation of the top of the wall from the base of the ladder is 15°. What is the length (in metres) of the ladder?

[SSC CGL Tier-2 9-March-2018 Maths-shift-1]

A 5√6 - 5√3

B 5√6 - 5√2

C 5√2 - 1

D 5√3 + 5√2