If the fore bearing of a line AB is 35° and that of line BC is 15, then the included angle between the lines is
a) 20°
b) 50°
c) 160°
d) 230°
If the fore bearing of a line AB is 35° and that of line BC is 15, then the included angle between the lines is
a) 20°
b) 50°
c) 160°
d) 230°
