Math please help!!
posted by Bob
In most geometry courses, we learn that there's no such thing as "SSA Congruence". That is, if we have triangles ABC and DEF such that AB=DE, BC=EF, and ∠A=∠D, then we cannot deduce that ABC and DEF are congruent.
However, there are a few special cases in which SSA "works". That is, suppose ABC is a triangle. Let AB=x, BC=y, and ∠A=θ. For some values of x, and θ, we can uniquely determine the third side, AC.
(a) Use the Law of Cosines to derive a quadratic equation in AC.
Can someone please give me a step by step explanation of how to do this? This is due tomorrow! Thanks!!!!