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Sagot :

Answer:

D. none of the above

Step-by-step explanation:

the square of a side of a plane triangle equals the sum of the squares of the remaining sides minus twice the product of those sides and the cosine of the angle between them.

Answer:

c

Step-by-step explanation:

c² = a² + b² - 2abCos(C)

a. is wrong because it should be minus twice the product of 2 sides