tand

#tand

##Syntax tand ( r : real ) : real

##Description The tand function is used to find the tangent of an angle given in degrees. For example, tand (45) is 1.

##Example This program prints out the tangent of 0, 30, 60, 90, up to 360 degrees.

    for i : 0 .. 12
        const angle := i * 30
        put "Tan of ", angle, " is ", tand ( angle )
    end for

##Details An argument to tan of 90, 270, etc. may result in an overflow (and halt of the program) as the result is technically ¥. (It may not cause an overflow due to rounding, in which case the result will simply be a very large number.)

##See also the sind.html and cosd.html functions for calculating sine and cosine.

the tan.html function which finds the tangent of an angle given in radians. (2p radians are the same as 360 degrees.)

See also predefined unit mathmodule.html.