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Section: Mathematical Functions
Compute the phase angle in radians of a complex matrix. The general syntax for its use is
p = angle(c)
 where c is an n-dimensional array of numerical type. 
For a complex number x, its polar representation is given by 
![\[ x = |x| e^{j\theta} \]](form_46.png) 
and we can compute
![\[ \theta = \mathrm{atan2}(\Im x, \Re x) \]](form_47.png) 
Here are some examples of the use of angle in the polar decomposition of a complex number.
--> x = 3+4*i
x = 
   3.0000 +  4.0000i 
--> a = abs(x)
a = 
 5 
--> t = angle(x)
t = 
    0.9273 
--> a*exp(i*t)
ans = 
   3.0000 +  4.0000i 
M version contributor: M.W. Vogel 01-30-06