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anonymous
 5 years ago
let u= (3.,4) find two unit vectors that are perpendicular to u
anonymous
 5 years ago
let u= (3.,4) find two unit vectors that are perpendicular to u

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0if u is a vector defined by <3,4>, then we can find 2 vector that are perpendicular to it by the dot product.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0<3,4> . <x,y> = 0 3x +4y = 0

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0this is the equation of a line that should be perpendicular to "u". the slope of this line is 3/4 which is good :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0magnitude doesnt matter so we can pick any vectors pointing in opposite direction on this line

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0<4,3> and <4,3> should work

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0lets test it by the dot ;) <3,4>.<4,3> = 12 + 12 = 0, thats good <3,4>.<4,3> = 12 + 12 = 0...good again
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