try:

Code:
var temp;
vec_set(temp, nullvector);
temp = fcos(camera.tilt, someVar);


or even:

Code:
var temp;
vec_set(temp, fcos(camera.tilt, someVar));


regards,

Formerly known as dennis_fantasy
Portfolio - http://www.designorhea.com/
Project - http://randomchance.cherrygames.org/