AP EAPCET 16th May 2023 Shift 2 Solved Paper

Section: Mathematics
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Question : 22 of 160
 
Marks: +1, -0
If cos3x‌sin‌4x=
n
∑
r=0
ar‌sin‌rx‌∀x∈ℝ
, then a3+a5:a1+a7=
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