Help me with this confusing geometry problem please!

Question

asked May 15, 2019 119k views

1 Answer

Joey Adams · Answer 1 · 2019-05-21T22:54:56+0000

The external angle between the secants (20°) is half the difference of the intercepted arcs.
(75° - B)/2 = 20°
75° - B = 40°
75° - 40° = B = 35°