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If vec(a)+vec(b)+vec(c )=0 " and" |vec(a...

If `vec(a)+vec(b)+vec(c )=0 " and" |vec(a)|=3,|vec(b)|=5, |vec(c )|=7`, then find the value of `vec(a)*vec(b)+vec(b)*vec(c )+vec(c )*vec(a)`.

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To solve the problem step by step, we start with the given information: 1. **Given**: \[ \vec{a} + \vec{b} + \vec{c} = 0 \] and the magnitudes: \[ ...
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  1. If vec(a)+vec(b)+vec(c )=0 " and" |vec(a)|=3,|vec(b)|=5, |vec(c )|=7, ...

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