function cosd, angle ;+ ; NAME: ; COSD ; ; PURPOSE: ; Return the cosine of an angle specified in degrees rather than radians. ; ; CALLING SEQUENCE: ; x = cosd(deg) ; ; INPUTS: ; angle angle in degrees ; ; OPTIONAL INPUTS: ; ; OUTPUTS: ; Cosine of angle returned. ; ; PROCEDURE ; ; COMMON BLOCKS: ; None. ; ; NOTES ; ; REFERENCES ; ; AUTHOR and DATE: ; Jeff Hicke Earth Space Research Group, UCSB 12/07/93 ; ; MODIFICATION HISTORY: ; ;- ; return, cos(angle*!dtor) end