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The vectors veca,vecb,vecc are such tha...

The vectors `veca,vecb,vecc` are such that `veca+vecb+vecc=vec0`, If `|veca| =3`,`|vecb|=4` and `|vecc|= 5` , then show that `veca.vecb+vecb.vecc+vecc.veca = -25`

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If the three vectors veca,vecb,vecc are such that veca+vecb+vecc=vec0" and " |veca|=3,|vecb|=4,|vecc|=5 , then show that veca*vecb+vecb*vecc+vecc*veca=-25 .

Vectors veca,vecb and vec c are such that vec a+vec b+vec c =vec0 and |veca||=2,|vecb|=4 and |vec c|=6 , prove that, veca.vecb+vecb.vec c+vecc.veca=-28 .

If veca +vecb +vecc=0, |veca|=3,|vecb|=5, |vecc|=7 , then find the angle between vecb and vecc .

veca+vecb+vecc=vec0, |veca|=3, |vecb|=5,|vecc|=9 ,find the angle between veca and vecc .

veca,vecb,vecc be three vectors such that veca+vecb+vecc=0" and "|veca|=1,|vecb|=4,|vecc|=2 . Evalute veca*vecb+vecb*vecc+vecc*veca .

veca,vecb and vecc are three unit vectors . Show that, |veca-vecb|^2+|vecb-vecc|^2+|vecc-veca|^2le9 .

If veca,vecbandvecc are unit vectors such that veca+vecb+vecc=0 , then the value of veca.vecb+vecb.vecc+vecc.veca is

If veca,vecbandvecc are unit vectors such that veca+vecb+vecc=3 , then the value of veca.vecb+vecb.vecc+vecc.veca is

If vectors veca, vecb and vecc are coplanar, show that |{:(veca, vecb,vecc),(veca.veca,veca.vecb,veca.vecc),(vecb.veca,vecb.vecb,vecb.vecc):}|=vec0

If veca + 2 vecb + 3 vecc = vec0 " then " veca xx vecb + vecb xx vecc + vecc xx veca=

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