Relation Between Complex Slopes of Perpendicular Lines

[NEILS BOHR]

Homework Statement

what is the relation between complex slopes of two perpendicular lines?? :think:

Homework Equations

The Attempt at a Solution

i think it is same as the slopes of two st. lines that is the product shud be -1...but the answer given is sum of slopes is 0...

 

[berkeman]

Homework Statement

what is the relation between complex slopes of two perpendicular lines?? :think:

Homework Equations

The Attempt at a Solution

i think it is same as the slopes of two st. lines that is the product shud be -1...but the answer given is sum of slopes is 0...

What is meant by "complex slopes"? What about the slope of a line is complex?