CUET and UG exam CUET UG 2025 Mock Test Series Mathematics Three Dimensional Geometry Angle with Planes
The angle between the two planes 2x + 3y + 3 = 0 and -3y + 2z + 5 = 0 is
1
0
2
π/2
3
\(\rm \cos^{-1}{12\over13}\)
4
\(\rm cos^{-1} \left({-9\over13}\right)\)