Question

Angle between one diagonal of a cube and a diagonal of one face is-

• A. cos–1$\left( \frac { 2 } { 6 } \right)$
• B. cos–1$\sqrt { \frac { 4 } { 6 } }$
• C. cos–1$\left( \frac { 1 } { 2 } \right)$
• D. Not defined

Answer 1

Answer: (B)

cos–1$\sqrt { \frac { 4 } { 6 } }$

Answer 2

Angle between the diagonal of a cube and a diagonal of one face = cos–1 $\sqrt { \frac { 2 } { 3 } }$