Question

Can you help me with this question.​

Answer 1

30 degree is correct

angle acb is 75 degree ..... because bc is straight line

ab=ac

then angle abc = angle acb = 75 degree .... opposite side is equal

then angle bac + angle abc =105 ...exterior angle theorem

therefore,

75+angle bac =105

therefore,

angle bac=30 degree

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