SOLUTION: choose the correct x + yi form for : 2(cos 120 degrees + i sin 120 degrees)

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Question 35489: choose the correct x + yi form for : 2(cos 120 degrees + i sin 120 degrees)
Answer by venugopalramana(3286) About Me  (Show Source):
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choose the correct x + yi form for : 2(cos 120 degrees + i sin 120 degrees)
=2{COS(180-60)+iSIN(180-60)}=2{-COS(60)+iSIN(60)}
=2{-(1/2) +iSQRT(3)/2}
=-1+iSQRT(3)