Millionaire Mode

Direction cosines and direction ratios - class-XII

Question 1 of 53

The points with position vectors $60\hat{i}+3\hat{j}$, $40\hat{i}-8\hat{j}$, $a\hat{i}-52\hat{j}$  are collinear if

  1. $a=-40$
  2. $a=40$
  3. $a=20$
  4. $None\ of\ these$

Prize Money

15₹7 Crores
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6₹40,000
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1₹1,000