1. The problem statement, all variables and given/known data The vertices of a triangle are (0,0), (x, cos x), and (sin3x, 0), where 0 < x < p/2. a. If A(x) represents the area of the triangle, write a formula for A(x). b. Find the value of x for which A(x) is a maximum. Justify your answer. c. What is the maximum area of the triangle? 2. Relevant equations I know this involves min/max problems, and the area of a triangle at some point. 3. The attempt at a solution No idea where to start. I don't see any way to get an area function for the triangle.