Question

latest against a vertical wall at height of 12 m from the ground with its food at a distance of 9 metres from the wall on the ground if the foot of the latter it Swift 3 metre away from the fall how much lower will the letters slide down
pls help me​

Answer 1

Answer:

Step-by-step explanation:

This is similar to a right angle triangle, with the length of the ladder being the hypotenuse and the point at which the top end rests on the wall being one side and the point at which it touches the ground from the wall being the other side.

We can find the length of the ladder using Pythagoras theorem.

Length of the ladder = sqrt (12^2 + 9^2) = sqrt (144 + 81) = sqrt 225 = 15.

Therefore, if the ladder slips by 3 m, then the base becomes 12m. As the length of the ladder does not change, the ladder drops by the same amount, because of the above, Pythagoras Theorem, since 9^2 + 12^2 = 15^2.

Thus, the ladder slides down by 3m on the wall.