Answer:
Option B 63°
Step-by-step explanation:
we know that
If the ray is tangent to the circle
then
a°+b°=90° -----> by complementary angles
Remember that
The inscribed angle measures half that of the arc comprising
so
Find the measure of inscribe angle a
∠a=(1/2)[54°]=27°
Find the measure of angle b
a°+b°=90°
substitute
27°+b°=90°
b°=90°-27°=63°
