1.

Let A(3,0,−1),B(2,10,6) and C(1,2,1) be the vertices of a triangle and M be the mid point of AC. If G divides BM in the ratio 2:1, then cos(∠GOA) (O being the origin) is equal to :

Answer»

Let A(3,0,1),B(2,10,6) and C(1,2,1) be the vertices of a triangle and M be the mid point of AC. If G divides BM in the ratio 2:1, then cos(GOA) (O being the origin) is equal to :



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