AP EAPCET 23-Aug-2021 Shift 1 Paper

Section: Mathematics
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Question : 19 of 160
 
Marks: +1, -0
If x‌cos‌θ=y‌cos(θ+
2Ï€
3
)
=z‌cos(θ+
4Ï€
3
)
then
1
x
+
1
y
+
1
z
=
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