it doesn't have a tilting table
Cut a wedge of wood the width of the table and the angle you want and fix it to the table. The angle of the wedge is equal to the angle of incline from the vertical. Use an online triangle calculator to get distances if you don't have an angle finder.
In the picture the highlighted angles are all the same
An online calculator for triangles will allow you to enter eg 3 things you do know about a triangle:
You want your holes tilted over 12 degrees, your piece of wood(table) is 10 inches wide, there is a 90 degree (because you have a set square, or can use a piece of A4 glued to the wood etc)
Result:
cut the side B you don't know as 2 and 1/8th of an inch (or work in mm for an easy life
)
You now have a tilting table..
If the piece of wood you have is large and ungainly you might be better off using this technique to drill one good hole right through a short length of hardwood, then you can place that block onto your large sheet of wood and use it as a guide to line up your cordless drill at the right angle, drill as deep as you can then take the block away and finish off
If you make the wedge out of hardwood then it can be the guide block if you flip it upside down
Always remember you can use tools to make other tools to do jobs
ps, sorry if the pictures are enormous; they look reasonable on an iPhone but they end up a bit oversized on a computer..