When calculating the pieces in a triangle with only two sides and an intermediate angle is known, one must solve a quadratic equation. By solving the equation are 2, 1 or 0 solutions, as described below (A-D). These four options is illustrated in Figure 1-4 below. You must write at the bottom of the options (A-D) belongs to the illustrations (1-4)
A: there should be 2 solutions (both positive)
B: there must be 2 solutions (one positive and one negative)
C: there must be a solution
D: must be 0 solutions
Problem is that I have no idea how to start or how to find solutions. I hope anyone who wants to 'make one so I can follow them and do the rest.