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งานที่ 9 การหาค่าอัตราส่วนตรีโกณมิติจากตาราง

คณิตศาสตร์พื้นฐาน

หาค่า sin cos tan

อัตราส่วนตรีโกณมิติ (2)

คณิตศาสตร์พื้นฐาน

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