R₁ / R = 0.718695432328

Expression 14: "A" Subscript, 1 , Baseline equals StartRoot, 0 , EndRoot equals 0

equals

Expression 15: "A" Subscript, 2 , Baseline equals StartRoot, 0 , EndRoot equals 0

equals

Expression 16: "C" Subscript, 1 , Baseline equals "B" Subscript, 2 , Baseline equals 12

equals

Expression 17: "C" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline equals 0

equals

Expression 18: "D" Subscript, 1 , Baseline equals "A" Subscript, 1 , Baseline equals 0

equals

Expression 19: "D" Subscript, 2 , Baseline equals "C" Subscript, 1 , Baseline tangent 45 halves equals 4.9 7 0 5 6 2 7 4 8 4 8

equals

4.9 7 0 5 6 2 7 4 8 4 8

Expression 20: "E" Subscript, 2 , Baseline equals "A" Subscript, 2 , Baseline equals 0

equals

Expression 21: "E" Subscript, 1 , Baseline equals StartRoot, left parenthesis, "R" plus "R" Subscript, 1 , Baseline , right parenthesis squared minus "R" squared , EndRoot equals 6.9 4 7 9 7 5 5 5 5 4 9

equals

6.9 4 7 9 7 5 5 5 5 4 9

Graphs

Expression 23: "y" less than 25 Has graph. To audio trace, press ALT+T.

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

Expression 25: left parenthesis, "D" Subscript, 1 , Baseline plus "R" cos "t" , "D" Subscript, 2 , Baseline plus "R" sin "t" , right parenthesis Has graph.

domain t Minimum: negative 90

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

domain t Maximum: 90

Expression 26: left parenthesis, "E" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "E" Subscript, 2 , Baseline plus "R" Subscript, 1 , 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: 180

Points

Start black, "R" End black

ABC is a Right Isosceles Triangle. R₁ / R = ?

Start black, "R" Subscript, 1 , Baseline End black