These are not easy problems . . .
2) Show that given the three angles of a triangle and one side
the area of the triangle is given by: .Code:B * *| * c * | * a * |h * * | * * | * A * - - * - - - - - * C D : - - - b - - - :
The area of a triangle is: .
In , use the Law of Sines: .
In right triangle
Substitute  and  into : .