UPSC 2015 CDS I Math Paper

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Question : 67 of 100
 
Marks: +1, -0
If
p=√
1−sinx
1+sinx
, q=
1−sinx
cosx
,r=
cos
1+sinx
then which of the following is/are correct?
1. p = q=r
2. p2 = qr
Select the correct answer using the code given below
[2015 CDS-I]
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