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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°?

Aarea of square c2 = -area of square a2 − area of square b2 + area of defect1 + area of defect2
Barea of square c2 = area of square a2 + area of square b2 + area of defect1 − area of defect2
Carea of square c2 = area of square a2 + area of square b2 − area of defect1 − area of defect2
Darea of square c2 = area of square a2 + area of square b2 + area of defect1 + area of defect2

Verified Answer :

meerkat18

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°?

C) area of square c2 = area of square a2 + area of square b2 − area of defect1 − area of defect2

I'm really not familiar with this subject area but I have encountered this problem before and this answer was confirmed.

Answer:

C !

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