Question

A ladder leaning against a house makes an angle of 60 degrees with the ground. the foot of the ladder is 7 feet from the foundation of the house. how long is the ladder?

Answer 1

A right triangle with the ladder the hypotenuse and the adjacent side 7 and the angle 60 degrees. Use cosine

cos 60=7/hyp

0.5=7/hyp

hypotenuse is 14 feet, the length of the ladder