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The two lines x = ay + b, z = cy + d; and x = a'y +b. z = c'y + d' are perpendicular to each other if ?

The two lines x = ay + b, z = cy + d; and x = a'y +b. z = c'y + d' are perpendicular to each other if ?

Grade:11

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4404 Points
5 years ago
angle between them is 90 so
aa’+1+dd’=0

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