Answer:
Step-by-step explanation:
Here, we want to get the height of the ladder from the ground
We start by drawing a diagrammatic representation of the information
We have this as follows:
Looking at the traingle, we can see a right triangle. This is indicated by the small box inside of the triangle
The side that faces the right angle is the length of the ladder which is 15 ft
It is the longest side and it is also referred to as the hypotenuse
We can use Pythagoras' theorem to find the missing length
According to the theorem,the square of the length of the hypotenuse equals the sum of the length of squares of the two other sides
mathematically,we have this as follows: