What is the angle between the planes 2x - y - 2z + l = 0 and 3x - 4y + 5z - 3 = 0?

Question Asked by a Student from EXXAMM.com Team

Q 2319123910.     What is the angle between the planes

2x - y - 2z + l = 0 and 3x - 4y + 5z - 3 = 0?
NDA 2013 Paper 1
A

pi/6

B

pi/4

C

pi/3

D

pi/2

HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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