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COMPLEX NUMBERS

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Light:
how to do question 10 (iii) and 10 (iv).please draw out the relevant Argand diagram so that i could understand better especially (iii) .couldnt understand marking scheme.no idea why have to (4+2i)w and (4+2i)/w.HELP!!!!!!!!!!

astarmathsandphysics:
When i get home

Light:
anyone ?

astarmathsandphysics:
Now

astarmathsandphysics:
iii)z has argument theta and w has argument 120. When we divide by w we subtract 120 from argument of z and when we times by  w we add 120 to the adument.

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