Inclination angle between the orbital plane and the plane of the sky

[quasarLie]

Homework Statement

I have the inclinination i which is the angle between the orbital plane and the plane of the sky, i [0,pi/2] if it is in the direct sense ans [pi/2, pi] in the indirect, so here i have an angle i=40 in the direct sense how can i calculate the i in the indirect sense

Homework Equations

The Attempt at a Solution

i don't know maybe 180-40=140

 

[Alloymouse]

If I am interpreting your context correctly, you're asking about orbital inclinations in the context of celestial bodies. If you defined the direct and indirect angles to be as such, then yes it seems that it is a matter of 180-40. Do give us a bit more context though, it will be helpful :)