TS EAMCET 5-Aug-2021 Shift 2 Question Paper

Section: Mathematics

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Question : 9 of 160

Marks: +1, -0

For n∊N , (

1+cos‌θ+i‌sin‌θ

1+cos‌θ−i‌sin‌θ

)n =

cos(nθ)−i‌sin‌n‌θ
−cos(nθ)+i‌sin‌n‌θ
cos(nθ)+i‌sin‌n‌θ
−cos(nθ)−i‌sin‌n‌θ

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