If AC bisects < BAD, it means it cuts it into 2 equal parts
so < BAC = < CAD
3x + 12 = 5x
12 = 5x - 3x
12 = 2x
12/2 = x
6 = x
< BAC = 3x + 12.......3(6) + 12 = 30 degrees <===
Step-by-step explanation:
<h2>Answer 1 :</h2>

<h2>Answer 2 :</h2>

X=180-2(60)
=180-120
=40
The length of the other angle is 40°.