This toolbox can solve any of the 6 possible subproblems associated with an oblique spherical triangle, when only 3 of the 6 angles are known.
The toolbox basically is an implementation of the set of tools developed in [Wertz, 2001], which aimed to fully automize the procedure and do away with the need of user intervention.
[b1, c1, C1, b2, c2, C2] = aas(A, B, a)
gives both solutions for the sides b and c and the angle C, when given angles A, B and side a. This particular problem can be called the Angle-Angle-Side problem, hence the name.
Both degrees and radians are implemented, the difference is indicating by appending a 'd' to the function name. The above example expects and returns radians, whereas
[b1, c1, C1, b2, c2, C2] = aasd(A, B, a)
expects and returns degrees.
James R. Wertz, Mission Geometry: Orbit and Constellation Design and Management, 2001. Published by Microcosm and Kluwer Academic Publishers.
Rody Oldenhuis (2023). Oblique Spherical Triangle toolbox (https://github.com/rodyo/FEX-sphericaltrig/releases/tag/v1.4), GitHub. Retrieved .
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Versions that use the GitHub default branch cannot be downloaded
See release notes for this release on GitHub: https://github.com/rodyo/FEX-sphericaltrig/releases/tag/v1.4
[linked to Github]
Found & corrected a few bugs
updated all files -- no dependencies should exist anymore.