Question

In triangle DEF, M angle D equals 44°, M angle E equals 61°, and EF equal 20 Inches. What is DE to the nearest 10th of an inch

Answer 1

The answer is DE = 27.81 in. Explanation: find the missing angle first, and put it into the equation for the law of sin ( sin(A)/a = sin(B)/b). Solve for the missing length, and you have the missing side to the triangle.