+0

# argand diagram express z in form a+bi

+1
260
2
+845

I used z= r(cos + isin)

which gave me $$z= 2(cos(-\pi/3)+ isin(-\pi/3) )$$

then simplified to z= 1- sqrt3 i

but i was wrong and i got told the answer should be 3 - sqrt3i as u add 2 at the end

can someone explain why please, thanks

Feb 24, 2019

#1
+6187
+2
Rom Feb 24, 2019
#2
+845
+1

thanks

YEEEEEET  Feb 24, 2019