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JEEMAIN and NEET
>>
Mathematics
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Trigonometry
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Q)
Simplify :
sin
7
x
−
sin
3
x
−
sin
5
x
+
sin
x
cos
7
x
+
cos
3
x
−
cos
5
x
−
cos
x
(
a
)
tan
2
x
(
b
)
tan
x
(
c
)
cot
x
(
d
)
1
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