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If planes ax+by+cz+d=0 and a'x+b'y+c'z+d...

If planes `ax+by+cz+d=0` and `a'x+b'y+c'z+d'=0` are
perpendicular, then

A

(a) aa' + bb' + cc' + dd'=0

B

(b) aa' + bb' + cc'=0

C

(c) `(a)/(a')=(b)/(b')=(c )/(c')`

D

(d) `(a)/(a')+(b)/(b')+(c )/(c')=0`

Text Solution

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The correct Answer is:
B
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