Circle o is shown below. what is the measure of angle bac? 43.5 46.5 93 174 \

46.5

Explanation:

Given that AOC is the diameter and AO na d OB are the radii, then ΔAOB is an isosceles triangle. Thus the base angles ∠A=∠B

thus

∠BAC=∠A will be found as follows:

sum of angles in a triangle is 180

thus

180-87=

=93

hence

∠A=∠B=93/2=46.5°

46.5°

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