1.

For A(1,−2,4), B(5,−1,7), C(3,6,−2), D(4,5,−1), the projection of −−→AB on −−→CD is

Answer»

For A(1,2,4), B(5,1,7), C(3,6,2), D(4,5,1), the projection of AB on CD is



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