Question

A ladder, leaning against a wall ,makes an angle of 60° with the horizontal. If the foot of the ladder is 2.5 metre away from the wall ,find the length of the ladder. *​

Answer 1

Answer:

Let AC be a ladder, AB is the wall and BC is the ground as shown in the figure.

We know that

cos60

o

=

AC

BC

2

1

=

AC

2.5

AC=5 m

Therefore, the length of ladder is 5 m.