Mathematics · Vector Algebra

If a, b, and c are unit vectors such that a + b + c = 0, then the value of a • b + b • c + c • a is:

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4None of these

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-32

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If a, b, and c are unit vectors such that a + b + c = 0, then the value of a • b + b • c + c • a is:

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If a, b, and c are unit vectors such that a + b + c = 0, then the value of a • b + b • c + c • a is:

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