The length of a vector is _______

I : If a = i + 4j, b = 2i - 3j, c = 5i + 9j then c = 3a + b II : If a = 3i - 6j + 2k then the length of the vector is 3.

let us define , the length of a vector as |a| + |b| +|c| . this definition coincides with the usual definition of the length of a vector ahati + bhatj + chatk if

let us define , the length of a vector as |a| + |b| +|c| . this definition coincides with the usual definition of the length of a vector ahati + bhatj + chatk if

Let us define,the length of a vector as |a|+|b|+|c|. This definition coincides with the usual definition of the length of a vector ai +bj+ck iff

let us define,the length of a vector as |a|+|b|+|c| .this definition coincides with the usual definition of the length of a vector ahat i+bhat j+chat k if

If the length of a vector be 7 and direction ratios be 2, -3, 6, then its direction cosines are

If the length of a vector be 7 and direction ratios be 2, -3, 6, then its direction cosines are