The angle between the lines 2x = 3y = - z and 6x = - y = - 4z is ?

Dear Student,
Please find below the solution to your problem.

Angle between the lines 2x = 3y = - z & 6x = -y = -4z is 90°
Since a1a2 + b1b2 + c1c2 = 0.
where a1=1/2, a2=1/6,
b1=1/3, b2=-1,
c1=-1, c2=-1/4

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