AP EAMCET Engineering 25 Apr 2017 Shift 1 Paper

Section: Mathematics

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Question : 7 of 160

Marks: +1, -0

If

2+3i‌sin‌θ

1−2i‌sin‌θ

is purely imaginary, then cos2θ=

1
2
3
2
1
3
2
3

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