This video lesson is perfect for distance learning, hybrid learning, sub plans, class activities, math centers, remedial help, flipping your class, and more! This lesson will teach your students about trigonometry in a cartesian plane. In particular, your students will be able to: * determine trig ratios by the coordinates of the terminal point. * measure angles in radians. * determine coterminal angles. * find the area of a sector of a circle. * evaluate trig ratios for a unit circle.Yo