angelramirez141 angelramirez141
  • 20-08-2020
  • Mathematics
contestada

Graph Z=3cos315+3isin315 explain where you would find this equation on a complex plane

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kgpspammm
kgpspammm kgpspammm
  • 27-08-2020

Answer:

cos 315°   =   45° reference angle in the 4th quadrant =  √2 /2

And sin 315°    is the negative of this

So  

z = (3) cos 315°  + ( 3i ) sin 315°  =

[   (3/2)√2  ,  - (3/2) √2 i  ]

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