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CBSE Class 11-science Answered

Find the polar form of complex number:  sin space 120 to the power of o minus i space cos space 120 to the power of o  
Asked by Topperlearning User | 11 Aug, 2014, 10:01: AM
answered-by-expert Expert Answer
As we know that the polar form is like
            r open parentheses cos space theta plus i space sin space theta close parentheses
          real part is cos space theta and  imaginary part is
 
So,  We need to convert  into  and  to  in the given complex number sin space 120 to the power of o minus i space cos space 120 to the power of o
 
That we can do as follows:-
 

 
Which is the required polar form.
Answered by | 11 Aug, 2014, 12:01: PM

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