Hyperbolic law of cosines
= Hyperbolic law of cosines
{wiki}
= Hyperbolic cosine rule
{synonym}
For opposite side $a$, $\cosh a=(\cos\alpha+\cos\beta\cos\gamma)/(\sin\beta\sin\gamma)$.
= Hyperbolic law of cosines
{wiki}
= Hyperbolic cosine rule
{synonym}
For opposite side $a$, $\cosh a=(\cos\alpha+\cos\beta\cos\gamma)/(\sin\beta\sin\gamma)$.