2 point A and B are on the shoreline of a lake. A surveyor is located at a point c where AC=180m and BC= 120m and find that <ACB has measure 56.3°. what is the distance between A and B

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling