Calculates the trigonometric cosine function. Angle units are in radians. The function is defined for complex angles. Phase of a complex number is evaluated between - π and π .
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Syntax |
Description |
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out = cos(x); |
Returns the complex cosine of x. |
Example
Calculate cos( π /4 + i).
theta=pi/4+1i; ?cos(theta); result: 1.09112-0.830993i
See Also