a ladders 20m long touch a wall at height of 10m find the angel made by ladders ...

I thought only God makes angels.

http://www.jiskha.com/display.cgi?id=1452431834

To find the angle made by the ladder, we can use trigonometry. Let's label the height of the wall as "h" and the length of the ladder as "l".

Given:
Height of the wall (h) = 10m
Length of the ladder (l) = 20m

We can use the trigonometric function tangent (tan) to find the angle. The tangent of an angle is the ratio of the opposite side (h) to the adjacent side (l).

Tangent of angle = Opposite side / Adjacent side
tan(angle) = h/l

Substituting the given values:
tan(angle) = 10/20

To find the angle, we'll use the inverse tangent function (tan^-1 or arctan) on both sides:

angle = arctan(10/20)

Using a calculator or a mathematical software, the value of arctan(10/20) is approximately 26.57 degrees.

Therefore, the angle made by the ladder with the ground is approximately 26.57 degrees.