Solve. E!) To nd the distance AB across a river, a distance EC of 461 In is laid off on one side of the river. It is found that E = 106.?\" and C = 16.9\". Find AB. Round to the nearest meter. 10} A hotair balloon is rising vertically 12 ftl'sec while the wind is blowing horizontallyF at 5 fte'sec. Find the angle that the balloon makes with the horizontal. 11} What arc length corresponds to a radius of 9. 5 CH1 and a cenh'al angle of 512 ? Round to the nearest hundredth of a cni