`sqrt(2 + sqrt(2 + sqrt(2 + 2cos8theta)))` = ______ - Vidyadip

MCQ

`sqrt(2 + sqrt(2 + sqrt(2 + 2cos8theta)))` = ______

✓
2cosθ
B
2cos4θ
C
cosθ
D
cos4θ

✓

Answer

Correct option: A.

2cosθ

A

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