If `vec(a)` and `vec(b)` are mutually perpendicular unit vectors then `(3vec(a)+2vec(b)).(5vec(a)-6vec(b))=?`

If vec a and vec b are mutually perpendicular unit vectors, then (3 vec a + 2 vec b ). (5 vec a - 6 vec b )=

If vec(a), vec(b) and vec(c ) are mutually perpendicular unit vectors and vec(a)xx vec(b)=vec(c ) , show that vec(b)=vec(c )xx vec(a) and vec(a)=vec(b)xx vec(c ) .

If vec a, vec b, vec c are mutually perpendicular unit vectors then |vec a + vec b + vec c| =

If vec(a),vec(b),vec(c),are mutually perpendicular unit vectors,then |vec(a)+vec(b)+vec(c)| is …………..

If vec a and vec b are mutually perpendicular unit vectors,write the value of |vec a+vec b+vec c|

If vec(a) and vec(b) are perpendicular vectors, show that : (vec(a)+vec(b))^(2)=(vec(a)-vec(b))^(2) .

If vec a,vec b,vec c are mutually perpendicular unit vectors,find |2vec a+vec b+vec c|

If vec a , vec b , vec c are mutually perpendicular unit vectors, find |2 vec a+ vec b+ vec c|dot

If vec a , vec b , vec c are mutually perpendicular unit vectors, find |2 vec a+ vec b+ vec c|dot