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how to do complex calculation?invoving Iota and phase eg: phase of 4+9i

 Nov 21, 2014

Best Answer 

 #1
avatar+99377 
+5

 

 

The 1.1526 is correct to  4 decimal places.

So the phase of this complex number is the angle       $$tan^{-1}\left(\frac{9}{4}\right)\;\approx\; 1.1526$$

 

My knowledge of complex numbers is very rusty but I think all of this is correct.

 Nov 21, 2014
 #1
avatar+99377 
+5
Best Answer

 

 

The 1.1526 is correct to  4 decimal places.

So the phase of this complex number is the angle       $$tan^{-1}\left(\frac{9}{4}\right)\;\approx\; 1.1526$$

 

My knowledge of complex numbers is very rusty but I think all of this is correct.

Melody Nov 21, 2014

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