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UPSC NDA I and II 2020 Math Solved Paper

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DIRECTIONS (Qs. 34-35) : Read the following information and answer the two items that follow:
Let

tan‌3‌A

tan‌A

=K, where tan‌A≠0 and K≠

1

3

[NDA-I 2020]

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Question : 34

Total: 120

What is tan2A equal to?

K+3
3K−1
K−3
3K−1
3K−3
K−3
K+3
3K+1

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