Question -
Answer -
Given
Direction ratios as -18, 12, -4
Where, a = -18, b = 12, c = -4
Let us consider the direction ratios of the line as a, b and c
Then the direction cosines are
∴ Thedirection cosines are
-18/22, 12/22, -4/22 => -9/11, 6/11, -2/11