Q. 193.5( 2 Votes )

If the vectors <s

Answer :

We know, if three vectors, and are co-planerif



Now, a1 = a, a2 = 1, a3 = 1


b1 = 1, b2 = b, b3 = 1


c1 = 1, c2 = 1, c3 = c



Applying C1 C1 – C2, C2 C2 – C3





Expanding along the R1








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