Let r⃗ = î + j + k̂
And, |r⃗ | = √ ((1)2 + (1)2 + (1)2)
= √ 3
Therefore, The direction cosines of the vector r⃗
Now, let α, β and γ be the angles formed by r⃗ with the positive directions of x, y and z axes.
Hence, the given vector is equally inclined to axes OX, OY and OZ.
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