]If `(bar a,bar b)=pi/6, bar c` is perpendicular to `bar a and bar b ,|bar a|=3,|bar b|=4,|bar c|=6` then `|[bar abar b bar c]|`

If bar(a) is a perpendicular to bar(b) and bar(c), |bar(a)|=2, |bar(b)|=3, |bar(c)|=4 and the angle between bar(b) and bar(c) is (2pi)/(3) then |[bar(a) bar(b) bar(c)]| =

(d) answer ANY one question :1. bar a, bar b and bar c be three vectors such that bar a +bar b+ bar c =0 and |bar a|=1, |bar b|=4,|bar c |=2 . Evlautae bar a.bar b + bar b.bar c+bar c.bar a .

bar a, bar b, bar c are three vectros, then prove that: (bar a xx bar b) xx bar c = (bar a. bar c) bar b-(bar b. bar c) bar a.

If bar(a),bar(b) and bar( c ) are perpendicualr to bar(b)+bar( c ),bar( c )+bar(a) and bar(a)+bar(b) respectively and |bar(a)+bar(b)|=6,|bar(b)+bar( c )|=8 and |bar( c )+bar(a)|=10 then |bar(a)+bar(b)+bar( c )| =……………….

If bar(a),bar(b) and bar(c) are mutually perpendicular vectors then [bar(a)bar(b)bar(c)]=

IF bar a , bar b , bar c are mutually perpendicular vectors having magnitudes 1,2,3 respectively then [ bar a + bar b + bar c " " bar b - bar a " " bar c ]=?

If bar a=hat i +hat j+ hat k, bar b=hat i-hat j +hat k, bar c=hat i +2hat j-hat k then the value of |[bar a.bar a, bar a.bar b, bar a.bar c],[bar b.bar a,bar b.bar b, bar b.bar c],[bar c.bar a,bar c.bar b,bar c.barc]|

bar(a),bar(b) and bar( c ) are non zero vectors. |(bar(a)xx bar(b))*bar( c )|=|bar(a)||bar(b)||bar( c )| then ……………

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