Direct horizontal circle readings to A and B are 3502015 and

Direct horizontal circle readings to A and B are 350-20-15 and 91-15-30 respectively. Your best estimate of the horizontal angle from B to A is

a) 83-32-12

b) 259-04-45

c) 220-47-52

d) 139-12-08

Solution

Horizontal Angle from B to A is

(B to A) =(350-20-15) - (91-15-30)

=259-04-45

Therefore the answer is (b)259-04-45