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The line a(1)x+b(1)y+c(1)=0 and a(2)x+b(...

The line `a_(1)x+b_(1)y+c_(1)=0` and `a_(2)x+b_(2)y+c_(2)=0` are perpendicular if:

A

`a_(1)b_(2)=a_(2)b_(1)`

B

`a_(1)b_(2)=-a_(2)b_(1)`

C

`a_(1)a_(2)+b_(1)b_(2)=0`

D

`a_(1)a_(2)-b_(1)b_(2)=0`

Text Solution

Verified by Experts

The correct Answer is:
C
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