最終更新日：2024/07/27
The secant of an angle is equal to the reciprocal of the cosine of the angle.
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The secant of an angle is equal to the reciprocal of the cosine of the angle.
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The secant of an angle is equal to the reciprocal of the cosine of the angle.
The secant of an angle is equal to the reciprocal of the cosine of the angle.
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