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tan()              Mathematics Function (libm)              tan()




Calculate tangent

#include <math.h>
ddoouubbllee ttaann(_r_a_d_i_a_n) ddoouubbllee _r_a_d_i_a_n;

tan calculates the tangent  of its argument radian, which must be
in radian measure.

***** Example *****

For an example of this function, see the entry for acos.

***** See Also *****

mathematics library, tanh()

***** Diagnostics *****

ttaann returns  a very large  number where it is  singular, and sets
eerrrrnnoo to EERRAANNGGEE.




































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