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Emiann222
11.04.2021 •
Mathematics
Can someone pls help me
Solved
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Ответ:
∠ BAC = 28.5°
Step-by-step explanation:
∠ AOB = 180° - 57° = 123° ( straight angle )
OA and OB are congruent ( radii of the circle ) , then Δ AOB is isosceles with base angles congruent, that is
∠ BAC = ∠ ABO , then
∠ BAC =
=
= 28.5°
Ответ: