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Let a, b and c be distinct non-negative numbers. If the vectors a i +a j +c k , i + k , c i +c j +b k lie on a plane, then which one of the following is correct?

Options

  1. Ac is the arithmetic mean of a and b
  2. Bc is the geometric mean of a and b
  3. Cc is the harmonic mean of a and b
  4. Dc is equal to zero

Correct answer

B. c is the geometric mean of a and b

Step-by-step solution

The correct answer is option (B).

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