The third choice is the correct one. draw a line from the starting point on the hill to the finishing point, suppose the angel formed by this new line and the slope of the hill is x sinx/150=sin27.4/200 sinx=(150*sin27.4)/200 x=sin-1[(150*sin27.4)/200] the angle formed by the slope of the hill and the horizontal line is the sum of x and 27.4