Question

А
D
50°
B
с
O 25°
O 30°
O
100°
O 50°

Answer 1

∠ CBA = 100°

Explanation:

Since BD bisects ∠ CBA , then

∠ ABD = ∠ CBD = 50°

∠ CBA = ∠ CBD + ∠ ABD = 50° + 50° = 100°