In a public park, a triangular region of grass is bounded by walkways. Sprinkler heads are placed at the vertices of the triangle as shown in the figure. Each sprinkler head can be set to limit its angle of rotation. For each sprinkler head, how large should the angle of rotation be set so as to keep the walkways dry and to conserve water? Round to the nearest degree. 930 116.8 n 118 # The angles of rotation are 248