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If a ,\ b represent the diagonals of a r...

If `a ,\ b` represent the diagonals of a rhombus, then ` vec axx vec b= vec0` b. ` vec adot vec b=0` c. ` vec adot vec b=1` d. ` vec axx vec b= vec a`

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We all know that diagonals of a rhombus `(\vec{a}` and `\vec{b})` are perpendicular.
Hence, their dot product is zero.
` \Rightarrow \vec{a} \cdot \vec{b}=0 `
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