math

Find the vector projection of u onto v. Then write u as the sum of two orthogonal​ vectors, one of which is proj (Subscript v)u.

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  1. well, the projection of u onto v is

    (u.v)/|v|

    Then recall that v = |u|cosθ v/|v|
    and the orthogonal component of u is |u|sinθ w/|w|
    where w is orthogonal to v

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