Answer:
C
Step-by-step explanation:
Show that the two angles are congruent at 65 each
Tangents touch the circle and make a right angle with the radii.
The radii are equal Property of radii.
The center line is common to both triangles. Reflexive line
The tangent lines are congruent Found from Pythagoras
The triangles are congruent SSS
The two angles are congruent Parts of Congruent Δs
Add the 2 congruent angles of 65 each.
The angles are 65 + 65 = 130
The entire circle has 360 degrees.
Subtract 130 from 360
b = 360 - 130
b = 230
