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The position vectors of three points A,B...

The position vectors of three points A,B,C are given to be `i+3j+3k` , `4i+4k`, `(-2i+4j+2k` respectively
Find a vector which is perpendicular to both `vec(AB)` and `vec(AC)` having magnitude 9 units.

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MAXIMUM PUBLICATION-MODEL QUESTION-EXAMPLE
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  2. The position vectors of three points A,B,C are given to be i+3j+3k , 4...

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