Given angle, determine reference angle and evaluate sine and cosine functions using reference angle

In this example, we are given a radian measure angle in the fourth quadrant. We use it to create a reference angle. We use the ref angle to evaluate the sine sin and cosine cos functions. We then make sure that we use the correct signs as we substitute in the reference angle by using "all students take calculus". Finally, we find the terminal point on the unit circle of the given angle. Each part of this process is explained and written out step-by-step.