Answer:
3 2/3
Step-by-step explanation:
Use a calculator please
15 and 450 because you divide and multiply until you get the same number
The answer is 12. if you need help, do 60•.2
∠BDC=30, so ∠CBD + ∠BCD=180-30=150
ΔDBC is isosceles, so ∠CBD=∠BCD=half of 150=75
∠ABC=∠ABD-∠CBD=155-75=80
ΔABC is isosceles, so ∠ABC=∠ACB=80
∠BAC=180-80-80=20
