Question

lines x-y-z=0, ayz+bzx+cxy=0 are at right angles if
a. a=b+c
b. a=b-c
c. c=(a-b)/2 (these are option)

Answer 1

I don't know the answer

Answer 2

Answer:a=b+c

Step-by-step explanation:

put x=l, y=m, z=n in both the equations and then solve for l,m,n.

l-m-n=0

amn+bnl+clm=0

at the last step take help of the fact that the lines are at right angle (use product of roots).