The direction ratios of a line are (1, -3, 2). Its direction cosines will be:

  1. (1, -3, 2)
  2. (-1, 3, -2)

Answer (Detailed Solution Below)

Option 3 :
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Agniveer Navy SSR Full Test - 01
100 Qs. 100 Marks 60 Mins

Detailed Solution

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Concept:

If the direction ratios of a line are (l, m, n), then its direction cosines are

 .

Calculation:

Using the formula for direction cosines from direction ratios, the required direction cosines are:

.

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