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If the vectors `(hati+ hatj + hatk)` and `3 hati` from two sides of a triangle, then area of triangle is :A. `sqrt3` unitB. `2sqrt3` unitC. `(3)/(sqrt2)` unitD. `3sqrt2` unit |
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Answer» Correct Answer - 3 Area of triangle `= (1)/(2)| vecA xx vecB|` |
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