[2(cos(pi/3)+isin(pi/3))]^(.5)

I simplified it to 2^(.5) * (cos(pi/6)+isin(pi/6)), but I have no idea what else to go to.

Any tips would be very helpful,

thx in advance

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- Jul 1st 2010, 10:51 AMsqueeze101Find the roots of a complex number
[2(cos(pi/3)+isin(pi/3))]^(.5)

I simplified it to 2^(.5) * (cos(pi/6)+isin(pi/6)), but I have no idea what else to go to.

Any tips would be very helpful,

thx in advance - Jul 1st 2010, 01:01 PMTKHunny
You have not simplified anything. You have demonstrated half of DeMoivre's formula. Now move on to the other half. You should find two solutions separated by $\displaystyle \pi$.

- Jul 2nd 2010, 03:46 AMHallsofIvy
What

**are**$\displaystyle sin(\pi/6)$ and $\displaystyle cos(\pi/6)$? You should be able to give exact values. ($\displaystyle \pi/6$ radians is the same as 30degreees.)