What angle does a 3.8m ladder make with the ground if it reaches 2.1 m up the wall?

How far is the foot of the ladder from the wall?

1 answer

sinθ = 2.1/3.8

distance from wall can be found using either

x = 3.8 cosθ
or
x^2 = 3.8^2 - 2.1^2