Returns the hyperbolic cosine of the given angle.
HCOS(Angle)
Angle is the angle in radians for which you want the hyperbolic cosine.
Remark
Formula

Description 
=HCOS(1.047)  Hyperbolic
cosine of 1.047 radians 
=HCOS(60*PI()/180)  Hyperbolic
cosine of 60 degrees (0.5) 
=HCOS(RADIANS(60))  Hyperbolic
cosine of 60 degrees (0.5) 