Here's the question: The leaning Tower of Pisa leans toward the south at an angle of 5.5°. On one day, its shadow was 90m long, and the angle of elevation from the tip of the shadow to the top of the tower is 32°. Determine the slant height of the tower. How high is the tip of the tower above the ground? Now what I couldn't get is what is the "slant height?" I did the equation using the sine law, but then realised I had just found the length of the slant, not the height. Any suggestions?