<p>So I took the December 05 ACT for practice and had a question for Math. Help with an explanation would be much appreciated.</p>

<ol>

<li>The Leaning Tower of Proville creates an 85 degree angle between itself and the level ground around the tower. The tower's shadow is 100 feet long. If it can be determined, which of the following expressions gives the distance, in feet, from the top of the tower to the ground?

A. 100 cos 85 degrees

B. 100 sin 85 degrees

C. 100 tan 85 degrees

D. 100 cot 85 degrees

E. Cannot be determined from the given information.</li>

</ol>

<p>The correct answer is E. Why is it not C?</p>