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```        Q:-The non zero value of 'a' for which the lines 2x-y+3z+4=0=ax+y-z+2 and x-3y+z=0=x+2y+z+1 are coplanar is:
A. -2
B. 4
C. 6
D. 0```
7 years ago

147 Points
```										Dear Tapasranjan
2x-y+3z+4=0=ax+y-z+2 and x-3y+z=0=x+2y+z+1 are coplanar
then point of intersection of line must satisfy all the 4 plane
solve plane
2x-y+3z+4=0
x-3y+z=0
x+2y+z+1 =0
x= 12/5
y = -1/5
z= -3
this point also satisfied by
ax-y+z+2=0
put value and find a
a=-2
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```
7 years ago
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