A wooden plank is leaning against a wall. The bottom of the plank is 3 feet from the wall. Answer each of the following questions, and show all of your work. Find AC,approximate length of the...
By representing the data in the right triangle ABC we get
AC= height of the plank = l
BC = height of the ground where the plank touches the wall = h
AB = distance from the wall = 3
so, tan 49 = AB/BC = 3/h = 3/1.1504 = 2.6f
sin 49 = AB / AC = 3/ l = 3/0.7547 = 3.9f