• Advertisement
Sign in to follow this  

Spherical Trig problem

This topic is 2448 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Im trying to use spherical trig to solve a problem

In the standard method to compute the angles, I already have only the following four angles

A, a, B, b

but from these, what formula can I use to compute either C, or c?

Thanks

Share this post


Link to post
Share on other sites
Advertisement
It's been decades since I've done any spherical geometry, but I don't believe you have enough information. I.e., your information is under-constrained. In addition to a, A, b, B - you need c to find C, or C to find c.

Referencing this link, given only aAbB, you can only determine the ratio of sin c/ sin C. E.g., sin c/ sin C = sin a/ sin A.


Share this post


Link to post
Share on other sites
I don't really understand what you want, so maybe you could clarify it a bit, but if it's in any way related to computing angles of figures on the sphere, then it might help to know that angles are invariant under stereographic projection, so with this you can probably transform your problem into one in the plane.

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement