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[" R8UQ.S.If "vec a" and "vec b" are two...

[" R8UQ.S.If "vec a" and "vec b" are two vectors such that "],[|vec a+vec b|=|vec a|" ,then prove that "2vec a+vec b" is "],[" perpendicular to "vec b" .IDethi "set12013" ) "],[rarrvec 1]

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