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*This function gives the CIS value.
*This function gives the CIS value.
*CIS is another name for the complex exponential.
*CIS is another name for the complex exponential.
*<math>Cis(x)=e^{ix}=Cosx+i Sinx</math>, where <math>Cos</math> is the <math>Cosine</math> function,<math>i</math> is the imaginary unit and <math>Sin</math> is the <math>Sine</math>.
*<math>Cis(x)=e^{ix}=Cosx+i Sinx</math>, where <math>Cos</math> is the <math>Cosine</math> function,<math>i</math> is the imaginary unit and <math>Sin</math> is the <math>Sine</math> function.
*Also<math> Cos(x)= \frac{e^{ix}+e^{-ix}}{2}</math>;<math>Sin(x)=\frac{e^{ix}-e^{-ix}}{2i}</math> and <math>i^2</math>=-1.
*Also <math> Cos(x)= \frac{e^{ix}+e^{-ix}}{2}</math>;
*So "Cis" abbreviates "Cos + i Sin".
* <math>Sin(x)=\frac{e^{ix}-e^{-ix}}{2i}</math> and <math>i^2</math>=-1.
*So <math>Cis</math> abbreviates <math>Cos + i Sin</math>.
==Examples==
#CIS(45) = 0.5253219888177297+i 0.8509035245341184
#CIS(180) = -0.5984600690578581-i-0.8011526357338304
#CIS(90.53) = -0.838546204483341+ⅈ0.5448304901036493
==Related Videos==
{{#ev:youtube|v=qjT3XvS7Qno|280|center|Complex Exponential}}
==See Also==
*[[Manuals/calci/SIN | SIN]]
*[[Manuals/calci/COS | COS ]]
==References==
[http://mathworld.wolfram.com/Cis.html Complex Exponential]
*[[Z_API_Functions | List of Main Z Functions]]
*[[ Z3 | Z3 home ]]