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Tapasranjan Das Grade:
        

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

6 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
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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Badiuddin

6 years ago
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