Question

a 15 m long ladder reached a window 12m high from the ground on placing it against a wall a. find the dinstance of the foot of the ladder from the wall​

Answer 1

ladder is hypotenuse is 15m

window height from ground perpendicular 12m

by Pythagoras theorem

H² = P²+B²

15² = 12² +B²

B² = 225 -144

B² = 81

B=9m

the dinstance of the foot of the ladder from the wall 9m