CUSAT 2021 BTech Solved Paper Shift 3

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Question : 172 of 250

Marks: +1, -0

The product of all values of (cos‌x+isin‌x)‌

3

4

is

(cos‌4‌x+isin‌4x)
(cos‌4‌x−isin‌4x)
(cos‌3‌x−isin‌3x)
(cos‌3‌x+isin‌3x)

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