oblicz sinus kąta jaki krawędź boczna czworościanu foremnego tworzy z jego podstawą
krawedz boczna =a
wzor na wysokosc czworoscianu foremnego H=a√6/3
sinα=H/a
sinα=a√6/3 :a
sinα =a√6/3 ·1/a
sinα=a√6/3a
sinα=√6/3≈0,816 to α=55°
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krawedz boczna =a
wzor na wysokosc czworoscianu foremnego H=a√6/3
sinα=H/a
sinα=a√6/3 :a
sinα =a√6/3 ·1/a
sinα=a√6/3a
sinα=√6/3≈0,816 to α=55°