Kąt jest ostry i . Wtedy jest równy
76\displaystyle \frac{7}{6} 67\displaystyle \frac{7}{6}
7⋅13120\displaystyle \frac{7 \cdot 13}{120} 1207⋅13\displaystyle \frac{7 \cdot 13}{120}
7120\displaystyle \frac{7}{\sqrt{120}} 1207\displaystyle \frac{7}{\sqrt{120}}
713120\displaystyle \frac{7}{13\sqrt{120}} 131207\displaystyle \frac{7}{13\sqrt{120}}
35b8489e-e13a-45ee-b184-c2be78e57364
