Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Quantitative Aptitude Geometry Triangles

Sides AB and AC of ΔABC are produced to D and E respectively. If the bisectors of ∠DBC and ∠ECB meet at O and ∠BOC = 85°, then what is the measure of ∠BAC?

1
10°
2
15°
3
20°
4
25°
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