Angle ABC = 340 / 3

Expression 12: "A" Subscript, 1 , Baseline equals "R" cosine left parenthesis, 90 plus "A" Subscript, "O" "C" , Baseline , right parenthesis

equals

negative 4.3 6 4 2 4 1 8 4 9 4 4

Expression 13: "A" Subscript, 2 , Baseline equals "R" sine left parenthesis, 90 plus "A" Subscript, "O" "C" , Baseline , right parenthesis

equals

negative 4.1 1 7 4 4 9 8 2 7 2 1

Expression 14: "B" Subscript, 1 , Baseline equals negative "E" Subscript, 1 , Baseline

equals

negative 5.5 0 9 2 9 6 6 4 1 2 8

Expression 15: "B" Subscript, 2 , Baseline equals negative "E" Subscript, 2 , Baseline

equals

2.3 7 6 4 7 8 5 9 6 2 3

Expression 16: "C" Subscript, 1 , Baseline equals "O" Subscript, 1 , Baseline

equals

Expression 17: "C" Subscript, 2 , Baseline equals "R"

equals

Expression 18: "E" Subscript, 1 , Baseline equals "D" Subscript, 1 , Baseline

equals

5.5 0 9 2 9 6 6 4 1 2 8

Expression 19: "E" Subscript, 2 , Baseline equals negative "D" Subscript, 2 , Baseline

equals

negative 2.3 7 6 4 7 8 5 9 6 2 3

Graphs

Expression 21: "y" less than 25

Expression 22: left parenthesis, "R" cos "t" , "R" sin "t" , right parenthesis

domain t Minimum:

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

domain t Maximum: 360

Expression 23: polygon left parenthesis, "A" , "B" , "O" , "B" , "C" , "O" , "C" , "D" , "E" , right parenthesis

Points

100

∠ ABC = ?