UPSC CDS I 2025 Mathematics Paper

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A hall is of length 1 , breadth b and height h. The maximum distance between any two points (say P and Q ) inside the hall is 14 m , whereas the maximum distance between two points (say P and R ) on the floor is 6√‌5m.

Question : 62 of 100

Marks: +1, -0

If α is the angle between the line joining P and Q , and the line joining P and R , then what is cos‌α equal to?

‌2
√5
7
‌3
√5
7
1
3
2
3

Validate

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