19. Looking at this vector, it is easy to imagine a right triangle, made from ax, a, and a . In this case, | a | would be the hypotenuse, and ax & ay would be the legs. a. Show, using the Pythagorean Theorem, that la|? = ax + ay?. b. Show, using SOHCAHTOA, that ax = Ja cos 0. c. Show, using SOHCAHTOA, that ay = a| sin 0