Returns the inverse hyperbolic cotangent of the given angle.
HACOTAN(Angle)
Angle is the angle in radians for which you want the inverse hyperbolic cotangent.
Remark
Let Sgn(x) be
the sign of x in radians.
Formula

Description 
=HACOTAN(1.047)  Inverse
hyperbolic cotangent of 1.047 radians 
=HACOTAN(60*PI()/180)  Inverse
hyperbolic cotangent of 60 degrees (0.5) 
=HACOTAN(RADIANS(60))  Inverse
hyperbolic cotangent of 60 degrees (0.5) 