CUET Mathematics 2026 29th May Shift 2 PYQs

The angle between 2 planes $4x + 8y + z - 8 = 0$ and $y + z - 4 = 0$ is :

If the lines $\frac{1-x}{3} = \frac{3y-6}{k} = \frac{3-z}{-2}$ and $\frac{1-x}{2k} = \frac{y-5}{3} = \frac{6-z}{5}$ are perpendicular to each other, then $k$ is equal to

The equation of line of intersection of the planes $x + y + 3z = 7$ and $x - y + 2z = 3$ is: