HELP [LEFT]A 12 foot ladder leans against the side of a building. The foot of the ladder is 5 feet from the wall of the building. Determine the height above the ground where the top of the ladder touches the wall.
HELP [LEFT]A 12 foot ladder leans against the side of a building. The foot of the ladder is 5 feet from the wall of the building. Determine the height above the ground where the top of the ladder touches the wall.
do you know what Pythogaras' theorem says?
it says $\displaystyle a^2 + b^2 = c^2$
where (in a right triangle) $\displaystyle a$ and $\displaystyle b$ are the legs of the triangle and $\displaystyle c$ is the hypotenuse, that is, the longest side (in this case, it is the length of the ladder)