Question

From the adjoining diagram, find the value of ZACB.

Hence, find the value of ZBAC​

Answer 1

Answer:

The right answer is 55°.

Answer 2

Answer:

70°

Step-by-step explanation:

125 + BCA = 180 ( LINEAR PAIR)

BCA = 180 -125

BCA = 55°

1st Method

ABC= BCA (ANGLES OPPOSITE TO EQUAL SIDES ARE EQUAL )

55+ BAC = 125° (EXTERIOR ANGLE PROPERTY)

BAC= 125 - 55

BAC = 70

2nd Method

Let angle BAC be x

55+ 55+ x = 180° (ANGLE SUM PROPERTY)

110+ x = 180

x = 180- 110

x= 70°

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