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I don’t understand stand this question someone please help me with work shown

I don’t understand stand this question someone please help me with work shown-example-1

1 Answer

2 votes

Answer:

60°

please look into the solution down here.

Explanation:

since BD bisects it, then the angles should be bisected symmetrically, or in other words, ANGLE ABD = angle DBC,

hence,

4x = 2x +30

2x = 30

x = 15

therefore, angle DBC = 2x + 30 = 2(15) + 30 = 60°.

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