text: Function to find the length of the chord
code: void length_of_chord ( double r , double x ) { cout << " The ▁ length ▁ of ▁ the ▁ chord " << " ▁ of ▁ the ▁ circle ▁ is ▁ " << 2 * r * sin ( x * ( 3.14 / 180 ) ) << endl ; }