Level:
Project ID:
9000120303
Accepted:
1
Clonable:
0
Easy:
0
Identify a valid relation involving the angle
\(\alpha \)
defined as an angle between a solid diagonal and a face diagonal through the same
vertex in a cube.
\(\mathop{\mathrm{tg}}\nolimits \alpha = \frac{\sqrt{2}}
{2} \)
\(\sin \alpha = \frac{\sqrt{3}}
{2} \)
\(\cos \alpha = \frac{\sqrt{5}}
{3} \)
\(\mathop{\mathrm{cotg}}\nolimits \alpha = \sqrt{3}\)
\(\alpha = 45^{\circ }\)