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UPSC NDA I 2014 Mathematics Paper
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© examsnet.com
Question : 54
Total: 120
What is
s
i
n
−
1
s
i
n
3
π
5
equal to ?
[NDA I 2014]
3
π
5
2
π
5
π
5
None of the above
Validate
Solution:
s
i
n
−
1
s
i
n
3
π
5
=
π
−
3
π
5
=
2
π
5
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