How to find the (arriving angles) αb,βb ?

If we know the values of two sides of triangle b, c and angles between them αa, βa . The angles α and β are representing the azimuth and elevation angles. I am not understanding how to implement the law of sines and cosines ( or any other method ) for this 3D problem.

More Muhammad Urd Sher Qaisrani's questions See All
Similar questions and discussions