Consider two vectors u  = ˆ ˆ 3i j  and v  = ˆ ˆ ˆ 2i j k    , λ 0. The angle between them is given by cos – 1 5 2 7         . Let 2 1 v v v      , where 1 v  is parallel to u  and 2 v  is perpendicular to u  . Then the value 2 1 v  + 2 2 v  is equal to

Question

Consider two vectors u  = ˆ ˆ 3i j  and v  = ˆ ˆ ˆ 2i j k    , λ > 0. The angle between them is given by cos – 1 5 2 7         . Let 2 1 v v v      , where 1 v  is parallel to u  and 2 v  is perpendicular to u  . Then the value 2 1 v  + 2 2 v  is equal to

Accepted Answer

14

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