Q. 274.0( 4 Votes )

A ladder makes an angle of 60° with the ground when placed against a wall. If the foot of the ladder is 2 m away from the wall, then the length of the ladder (in metres) is
A.

B.

C.

D. 4

Answer :


Here AC is the ladder of x meters placed against the wall of h meters at the distance of 2m from the wall.


It forms the angle of elevation to the top of wall as 60°


Cos 60° =


=


Hypotenuse = 4 (length of the ladder)

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