a rc t an ( x ) = y
this function is the inverse function of tan...
a rc t an ( x ) = t a n − 1 ( x )
then...
x = t an ( y )
in this case
a rc t an ( 5 3 ) = K
5 3 = t an ( K )
t an ( K ) = 5 3
3/5 ;
If arctan ( 5 3 ) = K , then tan ( K ) = 5 3 . Therefore, the final result is tan ( K ) = 5 3 .
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