A ladder makes an angle of 60degree with the floor. is lower end is at a distance of 3m from the wall. find the lenght of the ladder????
Let the length of the ladder AC be x metre.
Distance between the ladder and the wall (BC) = 3 metre
In triangle ABC,
Cos 600 = BC/ AC
½ = (3/ x)
x= 6.
Therefore, length of the ladder = 6 metre.