If `a(vecalphaxxvecbeta)=b(vecbetaxxvecgamma)+c(vecgammaxxvecalpha)=vec0` and at least one of a,b and c is non zero then vectors `vecalpha, vecbeta, vecgamma` are (A) parallel (B) coplanar (C) mutually perpendicular (D) none of these

If a( vecalphaxx vecbeta)+b( vecbetaxx vecgamma)+c( vecgammaxx vecalpha)=0 and at least one of a ,ba n dc is nonzero, then vectors vecalpha, vecbetaa n d vecgamma are a. parallel b. coplanar c. mutually perpendicular d. none of these

If a( vecalphaxx vecbeta)+b( vecbetaxx vecgamma)+c( vecgammaxx vecalpha)=0 and at least one of a ,ba n dc is nonzero, then vectors vecalpha, vecbetaa n d vecgamma are a. parallel b. coplanar c. mutually perpendicular d. none of these

If a( vecalphaxx vecbeta)+b( vecbetaxx vecgamma)+c( vecgammaxx vecalpha)=0 and at least one of a ,ba n dc is nonzero, then vectors vecalpha, vecbetaa n d vecgamma are a. parallel b. coplanar c. mutually perpendicular d. none of these

If a(vec alpha xxvec beta)+b(vec beta xxvec gamma)+c(vec gamma xxvec alpha)=0 and at least one of a,b and c is nonzero,then vectors vec alpha,vec beta and vec gamma are a.parallel b.coplanar c.mutually perpendicular d.none of these

If a(vecalpha xx vecbeta) + b(vecbeta xx vecgamma) +c(vecgamma xx vecalpha)=veco , where a, b, c are non-zero scalars, then the vectors vecalpha, vecbeta, vecgamma are

If (vec a xxvec b)+beta(vec b xxvec c)+gamma(vec c xxvec a)=0 and at least of the numbers alpha,beta and gamma is non- zero,then the vectors vec a,vec b and vec c are

If a,b,c are three non-coplanar mutually perpendicular unit vectors,then [a,b,c] is

Resultant of three non-coplanar non-zero vectors vec a , vec b and vec c

If alpha+beta+gamma= a vecdelta and vecbeta+vecgamma+vecdelta = b vecalpha and alpha, vecbeta, vecgamma are non coplanar and vecalpha is not parallel to vecdelta then vecalpha+vecbeta+vecgamma+vecdelta equals (A) avecalpha (B) bvecdelta (C) 0 (D) (a+b)vecgamma