Kąt jest ostry i . Wtedy
22\displaystyle \frac{\sqrt{2}}{2} 22\displaystyle \frac{\sqrt{2}}{2}
63\displaystyle \frac{\sqrt{6}}{3} 36\displaystyle \frac{\sqrt{6}}{3}
32\displaystyle \frac{\sqrt{3}}{2} 23\displaystyle \frac{\sqrt{3}}{2}
23\displaystyle \frac{\sqrt{2}}{3} 32\displaystyle \frac{\sqrt{2}}{3}
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