Question

A painters ladder makes an angle of 72 degrees with the ground. if the base of the ladder is 4 feet from the wall they are painting, how long is the ladder?

i need this fast pls

Answer 1

Set your calculator to degree mode.

The figure is not shown--please sketch it to confirm my answer.

cos(72°) = 4/h

h = 4/cos(72°) = about 12.94 feet