Question

Using the defects method, which relationship represents the Law of Cosines if the measure of the included angle between the sides a and b of ΔABC is less 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 c2 = area of square a2 + area of square b2 + area of defect1 + area of defect2

Answer 1

i dont understand the defects method to begin with so when i saw this problem i was just so confused

Answer 2

not D.. i got it wrong

Answer 3

It's C

Answer 4

Yes it's C