d - przekątna podstawy
D - przekątna graniastosłupa\
a)
[tex]d=\sqrt{2}\\ \\cos45=\frac{d}{D}\\ \\\frac{\sqrt{2} }{2}=\frac{\sqrt{2} }{D}\\ \\ \sqrt{2}D=2\sqrt{2}\\ \\ D=2[/tex]
b)
[tex]d=9\sqrt{3}\\ \\cos60=\frac{d}{D}\\ \\\frac{1}{2}=\frac{9\sqrt{3} }{D}\\ \\ D=18\sqrt{3}[/tex]
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d - przekątna podstawy
D - przekątna graniastosłupa\
a)
[tex]d=\sqrt{2}\\ \\cos45=\frac{d}{D}\\ \\\frac{\sqrt{2} }{2}=\frac{\sqrt{2} }{D}\\ \\ \sqrt{2}D=2\sqrt{2}\\ \\ D=2[/tex]
b)
[tex]d=9\sqrt{3}\\ \\cos60=\frac{d}{D}\\ \\\frac{1}{2}=\frac{9\sqrt{3} }{D}\\ \\ D=18\sqrt{3}[/tex]