Question

Can someone pls help me

Answer 1

∠ BAC = 28.5°

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 =
`(180-123)/(2)` =
`(57)/(2)` = 28.5°

Answer 2

I rhink the answer would be 273°

Explanation:

57+180=237°