Let a, b, c be three vectors such that a+ b+ c= 0, | a|=3, | b|=4, | c|=5, then a b+ b c+ c a=

MHT CET 2025 Mathematics question

Let be three vectors such that , , , , then

Answer: (B)

Square the given relation: \bar\bar\bar\bar\bar\bar\bar\bar\bar\bar\bar$

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Question ID VK-102430