The length of the base of an isosceles triangle is 12 inches. Each base angle measures 50°. Which is a feasible plan to find the length of each congruent side of the triangle? Justify each step.
to solve the leg of an isosceles triangle given the length of the base and its angle, we can use the cosine identity. where cos A = a / h where a is the adjacent side of the angle ( but for this case it is half of the base) h is the hypotenuse or the leg of the triangle A is the base angle
