1.

If the lines(x - 1)/-3 = (y - 2)/2λ = (z - 3)/2and (x - 1)/3λ = (y - 5)/1 = (z - 6)/-5are at right angles to each other, then λ is equal to (A) 9/7 (B) -9/7 (C) -10/7 (D) 10/7

Answer»

Correct option is (C) -10/7



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