X = AED = 30°

Expression 13: "D" Subscript, 1 , Baseline equals "B" Subscript, 1 , Baseline

equals

1.7 3 6 4 8 1 7 7 6 6 7

Expression 14: "D" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline

equals

Expression 15: "E" Subscript, 1 , Baseline equals "B" Subscript, 1 , Baseline

equals

1.7 3 6 4 8 1 7 7 6 6 7

Expression 16: tangent to the negative 1st power StartFraction, "E" Subscript, 2 , Baseline Over "C" Subscript, 1 , Baseline minus "E" Subscript, 1 , Baseline , EndFraction equals 2 alpha

Expression 17: "E" Subscript, 2 , Baseline equals left parenthesis, "C" Subscript, 1 , Baseline minus "E" Subscript, 1 , Baseline , right parenthesis tangent 2 alpha

equals

3.0 0 7 6 7 4 6 6 3 6 1

Expression 18: tangent to the negative 1st power StartFraction, "F" Subscript, 1 , Baseline minus "D" Subscript, 1 , Baseline Over "B" Subscript, 2 , Baseline , EndFraction equals 2 alpha

Expression 19: "F" Subscript, 1 , Baseline equals "B" Subscript, 2 , Baseline tangent 2 alpha plus "D" Subscript, 1 , Baseline

equals

5.3 2 0 8 8 8 8 6 2 3 8

Expression 20: "F" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline

equals

Graphs

Expression 22: "y" less than 40

Expression 23: left parenthesis, "D" Subscript, 1 , Baseline plus 1 half cos 45 , "D" Subscript, 2 , Baseline plus 1 half "t" sin 45 , right parenthesis

domain t Minimum:

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

domain t Maximum:

Expression 24: left parenthesis, "D" Subscript, 1 , Baseline plus 1 half "t" cos 45 , "D" Subscript, 2 , Baseline plus 1 half sin 45 , right parenthesis

domain t Minimum:

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

domain t Maximum:

Expression 25: polygon left parenthesis, "A" , "E" , "C" , "E" , "A" , "B" , "F" , "B" , "D" , "B" , "C" , right parenthesis

Points

AB = AC

Start black, 2 alpha End black

Start black, alpha End black

Start black, 3 alpha End black