1.

Find the projection of the vector i + j + k along the vector j.

Answer»

The projection of vector(a on b) = vector(a.b)/|vector b|

Here, vector a = i + j + k and vector b = j

So, vector(a.b) = 1 and |vector b| = 1

So, projection of i + j + k along, j = 1/1 = 1 unit.



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