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Show that the four points A,B,C and D with position vectors 4^i+5^j+^k ,−^j−^k, 3^i+9^j+4^k and 4(−^i+^j+^k) respectively are coplanar. |
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Answer» Show that the four points A,B,C and D with position vectors 4^i+5^j+^k ,−^j−^k, 3^i+9^j+4^k and 4(−^i+^j+^k) respectively are coplanar. |
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