Q. 84.6( 5 Votes )

Show that the vec

Answer :

Let r = î + j + k̂

And, |r | = √ ((1)2 + (1)2 + (1)2)


= √ 3


Therefore, The direction cosines of the vector r



Now, let α, β and γ be the angles formed by r with the positive directions of x, y and z axes.


Then,


We have,



Hence, the given vector is equally inclined to axes OX, OY and OZ.


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