I just wanted to make sure I'm doing this right, because I'm not positive I am.
Mountain Height Problem: A surveying crew has the job of measuring the height of a mountain. From a point on level ground they measure an angle of elevation of 21.6 degrees to the top of the mountain. They move 507 meters closer and find that the angle of elevation is now 35.8 degrees. How high is the mountain? (you may have to calculate some other information along the way)