2 trains have the speed 44.3 km/h, are headed each other on the same straight track. A bird that flies 177.2 km/h flies from the front of one train when they are 132.9 km apart and heads directly other train. On reaching the other train it flies directly back to the first train, and so forth. what is the total distance the bird travels? So i figure that I have to use pythagorian theorem. One of the legs is 132.9km but I don't know how to find the other leg. Thanks.