alleryThe triangle law and the parallelogram law of addition are:
AOpposite to each other
BUnrelated to each other
CInverse of each other
DEquivalent to each other
Answer & Solution
Correct answer: D. Equivalent to each other
1. Applying the triangle law inside the parallelogram gives OA + AC = OC.
2. Since AC equals OB, this becomes OA + OB = OC.
3. That is the parallelogram law, so the two laws are equivalent.
_Source: syllabus Mathematics Part II, Chapter 10, Vector Algebra._
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