what is inclination + question on career

This is how I eyeballed it. Launch from Village Pad roughly SSW, that gets you to about 70deg. The cheapest way to change inclination is at your slowest point and when combining with a climbing burn. What you want to do is burn at either ascending or descending nodes to increase altitude to 1000km and add a bit of normal component, but not too much. This will get you to about 85deg. Now your APO is at one of the nodes so do the rest of the normal burning with your circularisation. If you miss the inclination then it's still cheap to adjust at that kind of height, but you have got some free boost by combining with your climbing burns.

@Toinkove thank you

is this the heliosyncronous orbit mission? launch from Ali Pad at a heading of about 192 degrees. that should get close enough to 100 degrees.

@Toinkove thats what is killing me, i dont have that unlocked yet. this job came earlier then i needed it to.

@Herdingcats you mean use the burn nodes to tweak the inclination? The most efficient location to burn to adjust inclination is where your orbit crosses the equator. If you're only a few degrees off, it shouldn't take too much fuel to do so. It can be a little difficult to find exactly where the equator is so eyeball it at first and use the red burn draggers until the inclination starts increasing or decreasing as desired. you can get more precise by then dragging the node just a bit and observing if you're getting closer or further away from the desired inc.

@YaMomzBox420 if its the planet view, where you can use the burn nodes, i get that.

yeah there aren't a lot of good SR2 (now juno) videos around to be honest. But there are a ton for Kerbel Space Program and with something like this those videos should be as relevant for this game as for that one!

See that's kinda the issue. I did read about it and tbh I didn't understand it. I newest and the fact, like you said it's orbit relevant to the equator. A lot is lost to people who are very bad at math, we need the "Juno for dummies" option when it comes to flight and things like this. It makes people like me (even thou I used algebra at work for 20 years) who get frustrated and will just walk away because we don't grasp that aspect of the game. That would be a real help for people who want to play because it's fun, but are too frustrated with the overly complicated mechanics of the game.
Maybe like a stupid, normal, hard, rocket nerd settings would help. I don't mind playing and figuring things out but when I try abs research how to do things like this, it requires a lot if time and tbh most people won't/can't dedicate that much to a game. Life just gets in the way.

So, it sounds like you should probably look up stuff like orbital mechanics and the Kepler Orbital Elements(trust me, the basic idea is easy even if the math behind it isn't). Most new players aren't gonna have much knowledge on the subject, but that's part of the point of the game: learning about the physics and stuff involved in spaceflight. You just have to keep trying and look up stuff that you have problems with(also, continue to ask questions here and/or the discord server).

Now, to answer your question:
Inclination is the angle of your orbit relative to the planet's equator. If inclination is 0° then your orbit is perfectly around the equator(from west to east), if inclination is 90° then your orbit goes from pole to pole(south to north). The thing is, inclination can be anywhere from 0° to 180° depending on the direction of orbit over the planet. 180° is the same as 0° except in the opposite direction(east to west instead of west to east).

For a 100° inclination, you'd want to launch your rocket at either 100° or 280° on the nav sphere(both will give you the same inclination) and hope you don't need to adjust it much(depending on where you launch from, you might have a bit of difficulty getting to the correct inclination). If you do need to adjust things, you can use the burn planner to make things easier, but you'll probably want a tutorial on that as well if you're not familiar with how it works