A surveyor measures the lengths of the sides of a triangular plot of land. what is the measure of the angle of the triangular plot at which the surveyor stands? approximate to the nearest degree. cosâ€""1(0.75) = 41° cosâ€""1(0.125) = 83° cosâ€""1(0.563) = 56° cosâ€""1(0.15) = 89°