18 plus 12 divided by 2 = thats how u get the answer
The answer is possibly 10
Answer:
i think that is 147
Step-by-step explanation:
Triangle ABC and triangle DCE are congruent, so line DE = line AB
Use the cosine rule to find angle ACB






Angle ACB = 48.1°
Set up proportion 170/180=x/1 than cross multiply 170x=180 divide both sides by 170 answer 0.944 so 94% remains