Q. 244.8( 4 Votes )

Show that the dir

Answer :

To prove: the direction cosines of a vector are

Explanation: Let the required vector

And, the direction cosines are x,y and c

Since, the vector is equally inclined to axes OX, OY and OZ; then the direction cosines are equal

The vector is


SO, The direction cosines are

Can be written as

Hence, Proved

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