CBSE Class 12 Math 2023 Delhi Set 2 Solved Paper - Question 9 | ...

CBSE Class 12 Math 2023 Delhi Set 2 Solved Paper

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Question : 9 of 14

Marks: +1, -0

A unit vector

{a}↖{\^}

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

{a}↖{\^}

on the vector

{b}↖{→}=5 {i}↖{\^}+7 {j}↖{\^}-{k}↖{\^}

is:

$\;{11}/{15}$
$\;{11}/{5 {√{3}}}$
$\;{4}/{5}$
$\;{3}/{5 {√{3}}}$

Solution:

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