UPSC NDA I 2017 Mathematics Solved Paper

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Question : 16 of 120

Marks: +1, -0

What is the value of tan‌18°?

[NDA I 2017]

‌‌
√5−1
√10+2√5
‌‌
√5−1
√10+√5
‌‌
√10+2√5
√5−1
‌‌
√10+√5
√5−1

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