TS EAMCET 14-Sep-2020 Shift 2 Solved Paper

Section: Mathematics

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Question : 22 of 160

Marks: +1, -0

If cot(

A

2

)=√

1+a

1−a

.cot(

θ

2

), then cos θ=

(cosA)+a
1−acosA
(cosA)−a
1−acosA
(cosA)−a
1+acosA
(cosA)+a
1+acosA

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