UPSC NDA I 2021 Mathematics Solved Paper

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Question : 40 of 120

Marks: +1, -0

What is ‌

1+tan2θ

1+cot2θ

−(‌

1−tan‌θ

1−cot‌θ

)2 equal to?

[NDA-I 2021]

0
1
2‌tan‌θ
2‌cot‌θ

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