Have Radians function to convert angle from degrees to radians

In order to use shape (like circle) to handle hours / minutes / seconds I need to calcul for example :
X=140*sin(radians({drh}))
Y=140*cos(radians({drh}))

could it be possible to add it ?
(workaround : replace radians by ({drh}*3.14159265/180) )