How far from a wall is a 20 m long ladder, leading against wall forming a 60° angle with it?

5√3 m

5 m

10 m

None of these

To find the distance of the ladder from the wall, we can use trigonometry.

Let's denote the distance from the wall as 'x'. Since the ladder forms a 60° angle with the wall, we can use the cosine function:

cos(60°) = x / 20

We know that cos(60°) = 0.5, so:

0.5 = x / 20

x = 20 × 0.5

x = 10 m