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We know that the relation between the angle and the sides in the right triangle is very important, for this reason i invite you to read my simple work in that field in the attached link. https://www.academia.edu/40109918/A_new_trigonometric_approximation_for_any_acute_angle

- Amro Shalaan
**Posts:**1**Joined:**Fri Aug 23, 2019 6:02 pm**Reputation:****1**

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