thank you guys I guess there is more than one way to do this .but the fastest way is unfortunately the one where I put the radial out in the RADNAV page to intercept and takeoff and intercept it by bringing the cdi there using conventional VOR rose.since at takeoff the Sid can be canceled and I can be asked for radial interception and so instead of even calculating about what would be the reciprocal of 040 be (220) during takeoff ,I know this sounds stupid but I discussed this with my captain and he said at takeoff u gotta make your life easier.
On the contrary I want to make use of the AUTOFLIGHT system,so I have summarised all what I've got from these posts.assuming I'm at takeoff point il increase my workload.
1.GO to fix info put radial and vor to get it on pfd for better situation awareness
2. Fast check with Ddrmi what would the reciprocal be of radial 040
3.after departure and on interception heading ask for "Set direct x radial in 220