Participation # 8 Your in-class verbal participation skills are complemented by written participation assignments. The goal of these assignments is to improve your written mathematical communication skills while asking questions in a thoughtful way to test your understanding of the basic concepts of the course. This assignment is relevant to the worksheet on area of a triangle determined by two vectors. There were many approaches to take on that worksheet, and this write-up explores one of them in particular. 1. Explain how to derive the formula be - ad sin 0 using the angle-difference formula for sin: sin(A - B) = sin A cos B - cos Asin B. (a, b) (0,0)