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Write the value of p for which vector a = (3i + 2j + 9k) and vector b = (i + pj + 3k) are parallel vectors.

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Write the value of p for which vector a = (3i + 2j + 9k) and vector b = (i + pj + 3k) are parallel vectors.

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If two vectors are parallel

We get, 6 - 9p = 0

Here p = 2/3

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