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The area of the triangle formed by the p...

The area of the triangle formed by the points whose position vectors are `-3veci+vecj, 5veci+2vecj+veck` and `veci-2vecj+3veck` is

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Show that the points whose position vectors are 2veci+3vecj-5veck,3veci+vecj-2veck and 6veci-5vecj+7veck are collinear.

Show that the points whose position vectors are veci -2vecj+3veck , 2veci+3vecj-4veck , and -7vecj +10veck are collinear.

Show that the points whose position vectors are 4veci +5vecj+6veck , 5veci+6vecj+4veck , and 6veci+4vecj +5veck form an equilateral triangle.

Show that the points whose position vectors are 4veci +5vecj+veck , -vecj-veck , and 3veci+9vecj +4veck and -4veci+4vecj+4veck are co planar.

Find the angle between the vectors veci+2vecj+3veck and 3veci-vecj+2veck

Find the Projection of veca=2veci+vecj+2veck on vecb=5veci-vecj+3veck .

Find the angle between the vectors 3veci-4vecj+veck and veci-3vecj+4veck .

Find the projection of the vector veci + 3vecj + 7veck on the vector 7veci - vecj + 8veck

Find the projection of the vector veca = 2veci + 3vecj + 2veck on the vector vecb = veci + 2vecj + veck

Find a unit vector perpendicular to both veci+vecj+veck and 2veci+vecj+3veck .