Summary:

Questions.

Question 1.

Find the angle indicated below

a)

Question 2.

Using trigonometry, find the value BC

Question 3.

Find AC

Question 4.

A painter wants to paint a wall, he has to place the ladder at least 5 m from the base of the wall. If the painter needs the ladder to reach at least 10 m from the ground, what is the smallest angle he should have the ladder if the ladder is 14 m long to get it as high as possible.