Question

Direction cosines of the line
x + 2 2y - 5
z=-1 are
2
3
-
IMAT​

Answer 1

Answer:

Equation of line is  

2

x+2

​  

=  

3

2y−5

​  

;z=−1

x=  

2

−2

​  

=  

3/2

y−5/2

​  

=  

0

z+1

​  

 

Direction ratio of line are 2,3/2,0.

∴ Direction cosines of the line are  

4+(9/4)+0

​  

 

2

​  

,  

4+9/4+0

​  

 

3/2

​  

,0

⇒  

5/2,

2

​  

 

5/2

3/2

​  

,0

⇒ 4/5,3/5,0