Trigonometric function

Question

21.8 foot ladder liens against the wall such that an angle between the ladder and the ground and 75.9° how high does a ladder reach out the wall

Answer 1

h/21.8 = sin75.9

h = 21.8sin75.9

use a calculator with trig functions

h = 21.8(.969872= 21.14321

height = about 21.14 feet from top of the ladder to bottom of the wall