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<div style="font-size:30px">'''IMCOS (ComplexNumber)'''</div><br/>

<div style="font-size:30px">'''IMCOS (ComplexNumber)'''</div><br/>

* where 'ComplexNumber' is any complex number.

* where 'ComplexNumber' is any complex number of the form x+iy.

**IMCOS(), returns the cosine of a complex number.

**IMCOS(), returns the cosine of a complex number.

==Description==

==Description==

*This function gives the cos value of a complex Number.  

*This function gives the cos value of any complex Number.  

*Let iz is the complex number in the form of <math>x+iy</math>  

*Consider the complex number in the form of <math>x+iy</math>  

*x & y are the real number  

*x & y are the real number  

*'i' is the imaginary unit <math>i=\sqrt{-1}</math>

*'i' is the imaginary unit <math>i=\sqrt{-1}</math>