UPSC CDS 1 2020 Math Paper

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Question : 62 of 100

Marks: +1, -0

What is √

sec‌x−tan‌x

sec‌x+tan‌x

equal to ?

1
sin‌x+cos‌x
1
tan‌x+cot‌x
1
sec‌x+tan‌x
1
cosec‌x+cot‌x

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