sin(90°-theta) upon 1+sin theta + cos theta upon 1-cos(90° - theta)= 2 sec theta
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⁵t⁵⁶⅚⁸²¾2⅙⅛1⅕½⅓¹¼⅖² the 2⅔2¾²¾⅗⅜⅘⅚⅝⁶⁷⅞⁷⁸⁹ⁿ
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