CGPET 2014 Solved Paper

Section: Mathematics

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Question : 143 of 150

Marks: +1, -0

The value of cot−1(‌

√1+sin‌x+√1−sin‌x

√1+sin‌x−√1−sin‌x

) is equal to

‌
x
3
‌
x
4
1
‌
x
2

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