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Grade: 12
        

solve for x :


x7 = 1


 


{ the answer is not only = 1, it probably has 6 other values }

10 years ago

Answers : (2)

Askiitian.Expert Rajat
24 Points
							

Hi Anthony

1 = cos2pi + isin2pi

11/7 = cos(2rpi/7) + isin(2rpi/7)

where

r = 1,2,3,4,5,6,7

This was derived using Euler's Formula

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Regards,

Rajat

Askiitians.com

10 years ago
anthony rebello
8 Points
							

thnx for the reply, but i hav a doubt :

 

why cant    1=cos (0) + i sin (0)

10 years ago
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