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Suppose `(a_(1),b_(1)),(a_(2),b_(2))` and `(a_(3),b_(3))` are vertices of an equilateral triangle whose each side is of length2.1 units, then
`||(x_(1),y_(1),8sqrt(3)),(x_(2),y_(2),8sqrt(3)),(x_(3),y_(3),8sqrt(3))||=`__________

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MCGROW HILL PUBLICATION-DETERMINANTS-SOLVED EXAMPLES (NUMERICAL ANSWER TYPE QUESTIONS)
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