UPSC NDA II 2011 Mathematics Paper

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Question : 83 of 120

Marks: +1, -0

What is ‌

sin‌x

1+cos‌x

+‌

1+cos‌x

sin‌x

equal to?

2‌tan‌x
2‌cosec‌x
2‌cos‌x
2‌sin‌x

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