UPSC CDS I 2025 Mathematics Paper

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Question : 30 of 100
 
Marks: +1, -0
If m2(sin θ−1) + n2 (sin θ + 1)=0 , where 0 < θ < ‌
π
2
​,  then what is (m2 + n2) cosθ−(m2 − n2) cot θ equal to?
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