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If | vec a|+| vec b|=| vec c| and vec a+...

If `| vec a|+| vec b|=| vec c| and vec a+ vec b= vec c ,` then find the angle between ` vec a and vec bdot`

Text Solution

Verified by Experts

`veca=vecb=vecc`
or `|veca|^(2)+|vecb|^(2)+2veca.vecb= |vecc|^(2)`
`veca.vecb=|veca||vecb|`
`costheta=1or cos=0^(@)`
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