Question

Using the defects method, which of these relationships represents the Law of Cosines if the measure of the included angle between the sides a and b of ∆ABC is more than 90°? A. area of square c2 = -area of square a2 – area of square b2 + area of defect1 + area of defect2 B. area of square c2 = area of square a2 + area of square b2 + area of defect1 – area of defect2 C. area of square c2 = area of square a2 + area of square b2 – area of defect1 – area of defect2 D. area of square c

Answer 1

D

Step-by-step explanation: Just did it

Answer 2

PLATO: The answer is D area of square c2 = area of square a2 + area of squareb2 + area of defect1+ area of defect2