Answer:
the answer to your question is 'b'
Answer:
8
Step-by-step explanation:
To find the mid point you must
x = (x1 + x2) / 2
y = (y1 + y2) / 2
(3,2.5)
We know that the law of sines states that:

For simplicity, let:

In triangle A1BC this leads to:

Therefore:

Now, triangle A2BC is isosceles which means that both the base angles are equal, since angle CA1B and A2A1B are supplementary we have: