Question

Let = a₁+ a₂ $\hat { \mathrm { j } }$ + a₃, $\overrightarrow { \mathrm { b } }$ = b₁+ b₂ $\hat { \mathrm { j } }$ + b₃ and $\overrightarrow { \mathrm { c } }$ = g₁+ g₂ $\hat { \mathrm { j } }$ + g₃and || = 2$\sqrt { 2 }$makes the angle p/3 with the plane of $\overrightarrow { \mathrm { b } }$ and $\overrightarrow { \mathrm { c } }$ and angle between $\overrightarrow { \mathrm { b } }$ & $\overrightarrow { \mathrm { c } }$ is p/6 then the value of equals –

• A.
• B.
• C.
• D.

Answer 1

Answer: (C)

Answer 2

= (|. (×)|)ⁿ

= (|| || || cos $\frac { \pi } { 6 }$sin $\frac { \pi } { 6 }$)ⁿ

=