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UPSC NDA I 2023 Mathematics Solved Paper

Consider the following for the next two (02) items that follow :
Consider two lines whose direction ratios are (2,−1,2) and (k,3,5). They are inclined at an angle ‌

[NDA I 2023]

Question : 63 of 120

Marks: +1, -0

What is the value of k ?

[NDA I 2023]

4
2
1
-1

Validate

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