AP EAMCET Engineering 2018 Apr 22 Shift 2 Paper

Section: Mathematics
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Question : 20 of 160
 
Marks: +1, -0
If tan(
Ï€
4
+
y
2
)
=tan3(
Ï€
4
+
x
2
)
,
then
3‌sin‌x+sin3x
1+3sin2x
=
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