Using Vectors, Show That If $\| \vec { u } \| = \| \vec { v } \|$

question 29

Essay

Using vectors, show that if $\| \vec { u } \| = \| \vec { v } \|$ , then $\vec { U } + \vec { v }$ and $\vec { U } - \vec { v }$ are perpendicular.Conclude that the diagonals of a rhombus are perpendicular.

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