– úshmúyeshliktiń tárepleri hám múyeshleri arasındaǵı tómendegi baylanıstı kórsetetuǵın formulalar: $$\displaystyle\frac{a+b}{c}=\displaystyle\frac{\cos \displaystyle\frac{\hat{A}-\hat{B}}{2}}{\sin \displaystyle\frac{{\hat{C}}}{2}};\quad \displaystyle\frac{a-b}{c}=\displaystyle\frac{\sin \displaystyle\frac{\hat{A}-\hat{B}}{2}}{\cos \displaystyle\frac{{\hat{C}}}{2}};$$ bunda $a$, $b$, $c$ - úshmúyeshliktiń tárepleri, $\hat{A}$, $\hat{B}$, $\hat{C}$ - úshmúyeshliktiń múyeshleri.