If vecP+vecQ=vecR"and " P =Q=Rsqrt2, then find the angles between the pairs of vectors (vecP+vecQ),(vecQ,vecR)"and"(vecR,vec P) respectively

If vecP+vecQ=vecR"and " P =Q=Rsqrt2, then find the angles between the

1.	If vecP+vecQ=vecR"and " P =Q=Rsqrt2, then find the angles between the pairs of vectors (vecP+vecQ),(vecQ,vecR)"and"(vecR,vec P) respectively
Answer» ANSWER :`90^(@),45^(@),45^(@)`