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UPSC 2014 CDS II Math Paper
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© examsnet.com
Question : 56
Total: 100
What is
sec
x
cot
x
+
tan
x
equal to ?
[2014 CDS-II]
sin
x
cos
x
tan
x
cot
x
Validate
Solution:
sec
x
cot
x
+
tan
x
=
1
cos
x
cos
x
sin
x
+
sin
x
cos
x
=
1
cos
x
cos
2
x
+
sin
2
x
sin
x
cos
x
=
1
cos
x
1
sin
x
cos
x
=
sinx
© examsnet.com
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