Question

A ladder is resting against a wall. The ladder and the ground make and angle of 45° and the ladder is 7 ft from the wall. How long is the ladder

Answer 1

The ladder is about 12 ft. long.

Answer 2

let's assume the ladder's long as x
sin 45 = 7/x
1/2^0.5 = 7/x
x = 7*1.414
x = 9.9 m
so long of the ladder is 9.9 m