how to do complex calculation?

Question

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

Guest Nov 21, 2014

+118703

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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

Melody · Answer 1 · 2014-11-21T05:23:34

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.