A park is being considered in a space between a small river and a highway as a rest stop for travelers (see Figure 4.12). Boundary BC is perpendicular to the highway and boundary AD makes an angle of 75° with the highway. BC is measured to be 160.0 m, AD is 270.0 m, and the boundary along the highway is 190.0 m long. What are the length of side AB and the magnitude of angle ABC?


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