This problem states that there are 5 trophies and the problem requires to determine the number of ways Naomi can line up her trophies. In this case, the formula using counting is 5 * 4 * 3 * 2 * 1. there is a decreasing trend as the number of trophies chosen to line up next is decreased by one each time. The answer is 120 ways.
Cos(t/2) I got .45 is that what you were looking for or do I need to plug it into the equation up top? can you give me notes of something? cos( -9/11/2) = .45
