IMTAN function

Returns the tangent of a complex number. The tangent of a complex number can be expressed by:

tan(a+bi)=sin(a+bi)/cos(a+bi)

The result is presented in the string format and has the character "i" or "j" as an imaginary unit.

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This function is part of the Open Document Format for Office Applications (OpenDocument) standard Version 1.2. (ISO/IEC 26300:2-2015)


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This function is available since LibreOffice 3.6


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IMTAN(Complex_number)

Complex_number is a complex number whose tangent is to be calculated.

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A complex number is a string expression resulting in the form "a+bi" or "a+bj", where a and b are numbers.
If the complex number is actually a real number (b=0), then it can be either a string expression or a number value.


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The function always returns a string representing a complex number.
If the result is a complex number with one of its parts (a or b) equal to zero, that part is not displayed.


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=IMTAN("4-3i")
returns 0.00490825806749606-1.00070953606723i.

=IMTAN(2)
returns -2.18503986326152 as a string. The imaginary part is equal to zero, so it is not displayed in the result.

Open file with example:

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