Angle ABC has a measure of about π/12 radians. Point C has
coordinates (0.9, 0.1). Assume a point, D, has coordinates (-0.9,-0.1) on the circle. What would the radian measure be for angle ABD? How do you know?
coordinates (0.9, 0.1). Assume a point, D, has coordinates (-0.9,-0.1) on the circle. What would the radian measure be for angle ABD? How do you know?