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Maths-

General

Easy

Question

$theta less than pi over 16 comma square root of 2 plus square root of 2 plus square root of 2 plus 2 cos space 8 theta end root end root end root equals k cos space theta not stretchy rightwards double arrow k equals$

2
4
8
16

The correct answer is: 2

sol. $straight n equals 3 comma text given end text equals 2 cos space open parentheses fraction numerator 8 theta over denominator 2 cubed end fraction close parentheses equals 2 cos space theta$

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