Question

Find the direction cosines of the line joining the points (-4,1,7) and (2.-3,2).​

Answer 1

Answer:

The direction ratios of the line joining these points are

(x

2

−x

1

),(y

2

−y

1

),(z

2

−z

1

)

(i.e)(3−2),(−2−3),(1−(−1))

⟹ we get (1,−5,2)

Step 2:

Its direction cosines are :

30

1

,−

6

5

,

15

2