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Four vectors bara ,barb,barc, and bard ...

Four vectors `bara ,barb,barc, and bard` are lying in the same plane. The vectors `bara` and `barb` are equal in magnitude and inclined to each other at an angle of `120^@`.`barC` is the resultant of `bara and barb`. Further `bara + barb + bard=0.` If the angle between `bara and bard `is `beta ` and the angle between `bara and barc `is a, find the correct relation between `alpha ` and `beta`

Text Solution

Verified by Experts

The correct Answer is:
`alpha=1/2 beta`
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