Solve the attached sum (Trigonometry)

Photosynthesis asked Jan 20, 2022

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Photosynthesis asked Jan 20, 2022

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14 votes

Answer:
$\sec \theta$

Explanation:

The period of
$\sec \theta$ is
$2\pi$ , so
$\sec(4\pi -\theta)=\sec(-\theta)$

Also, as
$\sec \theta$ is an even function,
$\sec(-\theta)=\boxed{\sec \theta}$

PowHu answered Jan 24, 2022

by PowHu

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