Question

5. Circle O is shown below. The diagram is not drawn to scale.
What is the measure of angle BAC?
A. 53.5
B. 146
C.36.5
D. 107

Answer 1

53.5

Answer 2

because the triangle ABO is "Isosceles triangle"
how ? Radius is equals in circles.
=> AO = BO

Answer 3

Great thanks so much!

Answer 4

the angles of base in the Isosceles triangle equal one to another.
and we know that sum of 180;
(180-73 )/2 =53.5