Uǧurlu H.H.Kazaz M.Özdemir A.2024-07-222024-07-2220051300686Xhttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/19709In this work, we state and prove the sine, cosine I, cosine II, sine-cosine and cotangent rules for spherical triangles on the hyperbolic unit sphere H02 in the Lorentzian space R13.EnglishMathematical modelsMathematical operatorsProblem solvingSet theoryVectorsFundamental theoremsGeodesic trianglesLorentzian spaceSine-Cosine rulesTheorem provingArticle