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Rotating Complex Numbers other than 90 Degrees (1 Viewer)

tempco

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Ok 90 degrees anticlockwise is multiplying by i, clockwise is dividing by i, if im not mistaken. What about say rotating pi/3?
 

steverulz55

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multiply by cis @, where @ is your degrees of rotation anticlockwise

rotating by 90deg anticlockwise is equivalent to multiplying by cis(pi/2) = i ; clockwise is cis(-pi/2) = -i

therefore to rotate by pi/3, multiply by cis(pi/3)
 

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