Question

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.

Answer 1

9.6 inches

Explanation:

cos 50 =(1/2 base) / side base =12

cos 50 = 6 / side

0.6248 = 6 / side

side=6 / (0.6248)=9.6 inches