The condition a1a2 + b1b2 + c1c2 = 0 is for the planes whose normals are _____ to each other.

(a) integral

(b) parallel

(c) perpendicular

(d) concentric

The question was asked during an online interview.

My question is taken from Three Dimensional Geometry in portion Three Dimensional Geometry of Mathematics – Class 12

NCERT Solutions for Subject Clas 12 Math Select the correct answer from above options

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