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Show that the points A,B,C with position vectors 2^i−^j+^k,^i−3^j−5^k, and 3^i−4^j−4^k respectively,are the vertices of a right-angled triangle. Hence find the area of the rectangle. |
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Answer» Show that the points A,B,C with position vectors 2^i−^j+^k,^i−3^j−5^k, and 3^i−4^j−4^k respectively,are the vertices of a right-angled triangle. Hence find the area of the rectangle. |
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