TS EAMCET 9-Sep-2020 Shift 2 Solved Paper

Section: Mathematics

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Question : 10 of 160

Marks: +1, -0

If

z=eiθ and

3cos3θ+2cos2θ+5cos5θ

3sin3θ+2sin2θ+5sin5θ

=

i‌

10

∑

r=0

ar‌zr

10

∑

r=0

br‌zr

then

(

10

∑

r=0

ar+

10

∑

r=0

br)

10

=

0
1
2
3

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