Find, with help of vectors, the area of ...

Find, with help of vectors, the area of the triangle with vertices : A(1,2,3),B(2,-1,4),C(4,5,-1) with reference to a rectangular system of axes.

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MODERN PUBLICATION-VECTORS-Exercise

Show that the three points veca-2vecb+3vecc, 2veca+3vecb-4vecc and -7v...
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With help of vectors find the area of the triangle with vertices A(2,3...
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Find, with help of vectors, the area of the triangle with vertices : A...
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Find the area of triangle with vertices (1,2,4),(3,1,-2)and(4,3,1).
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Find the value of 'x' if the area of triangle is 35 square cm. With ve...
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If veca,vecb,vecc are any three vectors then prove that. vecaxx(vecb...
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If veca,vecb,vecc are three vectors such that vecaxxvecb=vecc,vecbxxve...
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If veca,vecb,vecc are mutually perpendicular unit vectors and vecaxxve...
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If veca=hati+4hatj+2hatk , vecb=3hati-2hatj+7hatk and vecc=2hati-hatj+...
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If vecaxxvecb=vecbxxvecc ne vec0, show that veca+vecc=vec(mb) m being ...
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Prove that |vecaxxvecb|^2=|veca|^2|vecb|^2-(veca*vecb)^2=|:[veca*veca ...
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If veca,vecb,vecc are position vectors of non-collinear points A,B and...
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Prove that the normal to the plane containing three point whose positi...
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Find the unit vectors perpendicular to the plane ABC, where the positi...
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Prove that : sin(A- B) = sin A cos B -cos A sin B.
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Find the moment about (1,-1,-1) of the force 3hati+4hatj-5hatk acting ...
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The force represented by 3hati+2hatk is acting through the point 5hati...
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Find the moment about the point hati+2hatj-hatk of a force represented...
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The force represented by 5hati+hatk is acting through the point 9hati-...
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A force vecF=4hati+hatk acts through point A(0,2,0). Find the moment v...
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