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If | vec a|=2,\ | vec b|=5\ a n d\ vec ...

If `| vec a|=2,\ | vec b|=5\ a n d\ vec adot vec b=2,\ `find`\ | vec a- vec b|dot`

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Given: `|vec{a}|=2`

Given: `|vec{b}|=5`

Given: `vec{a} cdot vec{b}=2`

Therefore,
`|vec{a}-vec{b}|^{2}=|vec{a}|^{2}+|vec{b}|^{2}-2 vec{a} cdot vec{b}`

`Rightarrow 2^{2}+5^{2}-2(2)`

`Rightarrow 4+25-4`

`Rightarrow 25 `

...
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