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November 22nd, 2012, 10:41 AM  #1 
Senior Member Joined: Apr 2012 Posts: 106 Thanks: 0  Rotate complex number Which number do we get, if we rotate complex number 3 + i around complex number 1i, whereby angle of rotation is 60°. I cannot imagine what does rotation around the second vector should be.. 
November 22nd, 2012, 02:05 PM  #2  
Global Moderator Joined: May 2007 Posts: 6,436 Thanks: 562  Re: Rotate complex number Quote:
(1i) + {(3+i)(1i)}{cos(?/3) + isin(?/3)}  

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