DCE = 150. BAD = 105

運算式 15: "C" Subscript, 1 , Baseline equals "R" cosine "B" Subscript, "O" "C" , Baseline equals negative 5

equals

negative 5

運算式 16: "C" Subscript, 2 , Baseline equals "R" sine "B" Subscript, "O" "C" , Baseline equals 8.6 6 0 2 5 4 0 3 7 8 4

equals

8.6 6 0 2 5 4 0 3 7 8 4

運算式 17: "D" Subscript, 1 , Baseline equals "C" Subscript, 1 , Baseline minus "R" cosine left parenthesis, negative "A" Subscript, "B" "C" , Baseline , right parenthesis equals negative 13.6 6 0 2 5 4 0 3 7 8

equals

negative 13.6 6 0 2 5 4 0 3 7 8

運算式 18: "D" Subscript, 2 , Baseline equals "C" Subscript, 2 , Baseline minus "R" sine left parenthesis, negative "A" Subscript, "B" "C" , Baseline , right parenthesis equals 13.6 6 0 2 5 4 0 3 7 8

equals

13.6 6 0 2 5 4 0 3 7 8

運算式 19: "E" Subscript, 1 , Baseline equals "C" Subscript, 1 , Baseline plus "R" equals 5

equals

運算式 20: "E" Subscript, 2 , Baseline equals "C" Subscript, 2 , Baseline equals 8.6 6 0 2 5 4 0 3 7 8 4

equals

8.6 6 0 2 5 4 0 3 7 8 4

Graphs

運算式 22: "y" less than 25 有圖檔。要進行圖形閱讀，請按 Alt + T 鍵。

運算式 23: polygon left parenthesis, "A" , "B" , "D" , right parenthesis 有圖檔。

運算式 24: polygon left parenthesis, "A" , "B" , "D" , right parenthesis 有圖檔。

運算式 25: left parenthesis, "C" Subscript, 1 , Baseline plus "R" cos "t" , "C" Subscript, 2 , Baseline plus "R" sin "t" , right parenthesis 有圖檔。

定義域 t 最小值：

less than or equal to "t" less than or equal to

定義域 t 最大值： 180

運算式 26: polygon left parenthesis, "A" , "B" , "D" , "A" , right parenthesis 有圖檔。

運算式 27: left parenthesis, "R" cos "t" , "R" sin "t" , right parenthesis 有圖檔。

定義域 t 最小值：

less than or equal to "t" less than or equal to

定義域 t 最大值： 180

運算式 28: left parenthesis, "C" Subscript, 1 , Baseline plus "t" "R" , "C" Subscript, 2 , Baseline , right parenthesis 有圖檔。

定義域 t 最小值： negative 1

less than or equal to "t" less than or equal to

定義域 t 最大值：

Points

技術支援

∠ BAD = ?

∠ DCE = ?