NAME atan, atanf, atanl - arc tangent function LIBRARY Math library ( libm , -lm ) SYNOPSIS #include double ... atan(double x ); float atanf(float x ); long double atanl(long dou…NAME atan, atanf, atanl - arc tangent function LIBRARY Math library ( libm , -lm ) SYNOPSIS #include double ... atan(double x ); float atanf(float x ); long double atanl(long dou…NAME atan, atanf, atanl - arc tangent function LIBRARY Math library ( libm , -lm ) SYNOPSIS #include double ... atan(double x ); float atanf(float x ); long double atanl(long dou…