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SSC CHSL 8-Jan-2017 Shift 1 Paper
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© examsnet.com
Question : 58
Total: 100
(1 + sinA)/(1 - sinA) is equal to?
(cosecA - 1)/(cosecA + 1)
(cosecA + 1)/(cosecA - 1)
(secA + 1)/(secA - 1)
(secA - 1)/(secA + 1)
Validate
Solution:
Expression :
1
+
s
i
n
A
1
−
s
i
n
A
Replacing sinA by
1
c
o
s
e
c
A
=
1
+
1
c
o
s
e
c
A
1
−
1
c
o
s
e
c
A
=
1
+
c
o
s
e
c
A
c
o
s
e
c
A
c
o
s
e
c
A
−
1
c
o
s
e
c
A
=
c
o
s
e
c
A
+
1
c
o
s
e
c
A
−
1
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