Oblique Spherical Triangle toolbox : sssd(a, b, c) - File Exchange

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Highlights from
Oblique Spherical Triangle toolbox

aaa(A, B, C) AAA gives both solutions to the angle-angle-angle problem, in radians.
aaad(A, B, C) AAAD gives both solutions to the angle-angle-angle problem, in degrees.
aas(A, B, a) AAS gives both solutions to the angle-angle-side problem, in radians.
aasd(A, B, a) AASD gives both solutions to the angle-angle-side problem, in degrees.
acos2(alpha, beta)
acos2d(alpha, beta)
asa(A, B, c) ASA gives both solutions to the angle-side-angle problem, in radians.
asad(A, B, c) ASAD gives both solutions to the angle-side-angle problem, in degrees.
sas(a, C, b) SAS gives both solutions to the side-angle-side problem, in radians.
sasd(a, C, b) SASD gives both solutions to the side-angle-side problem, in degrees.
ssa(a, b, A) SSA gives both solutions to the side-side-angle problem, in radians.
ssad(a, b, A) SSAD gives both solutions to the side-side-angle problem, in degrees.
sss(a, b, c) SSS gives both solutions to the side-side-side problem, in radians.
sssd(a, b, c) SSS gives both solutions to the side-side-side problem, in degrees.
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from Oblique Spherical Triangle toolbox by Rody Oldenhuis
solves the general oblique spherical triangle

sssd(a, b, c)

function [A1, B1, C1, A2, B2, C2] = sssd(a, b, c)
%SSS   gives both solutions to the side-side-side problem, in degrees.
%
%   SSSD(a, b, c) may result in a vector filled with NaNs if the existence
%   condition |180 - a| - |180 - b| <= |180 - c| <= |180 - a| + |180 - b|
%   is not met. 
%
%   See also SSS.

% Rody P.S. Oldenhuis
% Delft University of Technology
% Last edited: 23/Feb/2009

    % find solutions by calling sss
    r2d = 180/pi;   d2r = 1/r2d;
    [a, b, c] = deal(a*d2r, b*d2r, c*d2r);
    [A1, B1, C1, A2, B2, C2] = sss(a, b, c);
    [A1, B1, C1, A2, B2, C2] = deal(A1*r2d, B1*r2d, C1*r2d, A2*r2d, B2*r2d, C2*r2d);
    
end

Highlights from Oblique Spherical Triangle toolbox

Highlights from
Oblique Spherical Triangle toolbox