A unit vector {a} makes equal but acute ...

CBSE Class 12 Math 2023 Delhi Set 2 Solved Paper

Question : 9 of 14

Marks: +1, -0

A unit vector

\hat{a}

makes equal but acute angles on the co-ordinate axes. The projection of the vector

\hat{a}

on the vector

\vec{b}=5\hat{i}+7\hat{j}-\hat{k}

is:

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