1.

Magnitudes of vectors vecP, vecQ and vecRare equal, IfvecP + vecQ+vecR =0, thenangle betweenvecRand vecQ is alpha while ifvecP + vecQ = vecR, the anglebetweenvecR and vecPis beta, then :

Answer»

`ALPHA = 2 BETA`
`alpha =beta`
`alpha =(beta)/(2)`
NONE of these

Solution :


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