Angle ADE = 75

Expression 13: "B" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline equals 0

equals

Expression 14: "C" Subscript, 1 , Baseline equals "B" Subscript, 1 , Baseline equals 13.8 5 6 4 0 6 4 6 0 6

equals

13.8 5 6 4 0 6 4 6 0 6

Expression 15: "D" Subscript, 1 , Baseline equals "A" Subscript, 1 , Baseline equals 0

equals

Expression 16: "E" Subscript, 1 , Baseline equals "B" Subscript, 1 , Baseline minus StartFraction, "C" Subscript, 2 , Baseline Over 2 , EndFraction StartRoot, 3 , EndRoot equals 6.9 2 8 2 0 3 2 3 0 2 8

equals

6.9 2 8 2 0 3 2 3 0 2 8

Expression 17: "E" Subscript, 2 , Baseline equals StartFraction, "C" Subscript, 2 , Baseline Over 2 , EndFraction equals 4

equals

Expression 18: "F" Subscript, 1 , Baseline equals "B" Subscript, 1 , Baseline minus "C" Subscript, 2 , Baseline equals 5.8 5 6 4 0 6 4 6 0 5 5

equals

5.8 5 6 4 0 6 4 6 0 5 5

Expression 19: "F" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline equals 0

equals

Graphs

Expression 21: "y" less than 25 Has graph. To audio trace, press ALT+T.

Expression 22: left parenthesis, "B" Subscript, 1 , Baseline plus "C" Subscript, 2 , Baseline cos "t" , "C" Subscript, 2 , Baseline sin "t" , right parenthesis Has graph.

domain t Minimum: 90

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

domain t Maximum: 180

Expression 23: left parenthesis, "A" Subscript, 1 , Baseline plus "D" Subscript, 2 , Baseline cos "t" , "D" Subscript, 2 , Baseline sin "t" , right parenthesis Has graph.

domain t Minimum: 0

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

domain t Maximum: 90

Expression 24: polygon left parenthesis, "D" , "E" , "D" , "A" , "B" , "C" , "E" , "A" , right parenthesis Has graph.

Points

CE = BF

Two Semicircles