question_answer

Given that \[\vec{P}+\vec{Q}+\vec{R}=\vec{0}\]. Two out of the three vectors are equal in magnitude. The magnitude of the third vector is \[\sqrt{2}\] times that of the either out of the other two. Which of the following can be the angles between these vectors :-

A)  \[{{45}^{o}},{{45}^{o}},{{90}^{o}}\]        

B)  \[{{45}^{o}},{{90}^{o}},{{135}^{o}}\]

C)  \[{{90}^{o}},{{135}^{o}},{{135}^{o}}\]                   

D)  \[{{30}^{o}},{{60}^{o}},{{90}^{o}}\]