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CDS Model Paper 1 Mathematics
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© examsnet.com
Question : 52
Total: 100
If
sin
x
+
cosec
x
=
2
, then what is
sin
9
x
+
cosec
9
x
equal to ?
2
18
512
1024
Validate
Solution:
Here put
θ
=
90
°
sin
90
°
+
cosec
90
°
=
1
+
1
=
2
Now,
sin
9
x
+
cosec
9
x
=
(
sin
90
)
9
+
(
cosec
90
)
9
=
1
+
1
=
2
© examsnet.com
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