Find mBAC. The figure is not drawn to scale.
https://www.connexus.com/content/media/461958-3292011-34843-PM-1262076942/res00000/ppg/examview/S_GEOMB_06_06_06_Unit_6B_Test/mc005-2.jpg
53.5°
146°
36.5°
107°

Question

Find mBAC. The figure is not drawn to scale.
https://www.connexus.com/content/media/461958-3292011-34843-PM-1262076942/res00000/ppg/examview/S_GEOMB_06_06_06_Unit_6B_Test/mc005-2.jpg
53.5°
146°
36.5°
107°

anonymous · Answer

what is the measure of angle ABO ?

anonymous · Answer

73

anonymous · Answer

no... try again.

anonymous · Answer

146

anonymous · Answer

you're guessing aren't you?

anonymous · Answer

how can it be 146 when you have an isosceles triangle in triangle AOB?

anonymous · Answer

that's a big hint.... triangle AOB is isosceles...

callisto · Answer

Another hints: 
(i) angle sum of triangle = 180 degrees
(ii) angle OAB = angle OBA (base angle, isos triangle)

anonymous · Answer

AO and BO are both radius' of the circle. So as told ^^ the triangle is isosceles.

anonymous · Answer

Hint: base angles of isosceles triangles are equal.