Find k for the given planes x + 2y + kz + 2 = 0 and 3x + 4y z + 2 = – McqOptions

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1.	Find k for the given planes x + 2y + kz + 2 = 0 and 3x + 4y z + 2 = 0, if they are perpendicular to each other.
A.	21
B.	17
C.	12
D.	11
Answer» E.

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