UPSC NDA I 2013 Mathematics Paper

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Question : 70 of 120

Marks: +1, -0

The expression ‌

cot‌x+cosecx−1

cot‌x−cosecx+1

is equal to

‌
sin‌x
1−cos‌x
‌
1−cos‌x
sin‌x
‌
1+cos‌x
sin‌x
‌
sin‌x
1+cos‌x

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