- Mat3-MrDCopy of Quiz on Solving Right Triangles (Finding Angles) 解直角三角形：測驗2（求角度）Quiz on Solving Right Triangles (Combined) 解直角三角形：合併測驗Trigonometric Ratios: Sine 三角比：正弦Trigonometric Ratios: Cosine & Tangent 三角比：餘弦和正切Quiz on Opposite, Adjacent & Hypotenuse 辨認對邊、鄰邊、斜邊：測驗Quiz on Trigonometric Ratios 辨認三角比：測驗Quiz on Solving Right Triangles (Finding Side Lengths) 解直角三角形：測驗1（求邊長）
