If `bar(a), bar(b), bar(c)` form a left handed orthogonal system and `bar(a)*bar(a)=4, bar(b)*bar(b)=9, bar(c)*bar(c)=16` then `[bar(a) bar(b) bar(c)]` =

If bar(a)+bar(b)+bar(c), then

If bar(a)xxbar(b)=bar(c) and bar(b)xxbar(c)=bar(a), then

If bar(a)+bar(b)+bar(c)=bar(0) then bar(a)timesbar(b)=

If [bar(a)+2bar(b)2bar(b)+bar(c)5bar(c)+bar(a)]=k[bar(a)bar(b)bar(c)]

If |bar(a)|=|bar(b)|=|bar(c)|=2 and bar(a).bar(b)=bar(b).bar(c)=bar(c).bar(a)=2 then [bar(a) bar(b) bar(c)] equal to

If bar(c)=3bar(a)-2bar(b) , then prove that [bar(a)bar(b)bar(c)]=0 .

[bar(a)" "bar(b)+bar(c)" "bar(a)+bar(b)+bar(c)]=0

If bar(a),bar(b) and bar(c) are perpendicular,bar(c)+bar(a),bar(b)+bar(c) and bar(a)+bar(b)+ respectively and if |bar(a)+bar(b)|=6,|bar(b)+bar(c)|=8 and |bar(c)+bar(a)|=10 then |bar(a)+bar(b)+bar(c)| is equal to

if bar(a),bar(b),bar(c) are any three vectors then prove that [bar(a),bar(b)+bar(c),bar(a)+bar(b)+bar(c)]=0

(bar(a)+2bar(b)-bar(c))*(bar(a)-bar(b))xx(bar(a)-bar(bar(c)))=