In trigonometry, there are several means of expressing direction from one point to another. One means of expressing a bearing is by using due-North as the primary reference ([url=https://www.geogebra.org/m/BaFyeCFH]click here[/url] for a refresher). Another means of expressing such direction is through a [url=https://www.geogebra.org/m/dDKRSu4z]direction angle[/url]. [br][br]A third means is illustrated below. [br][br][b]Be sure to drag point [i]B[/i] around! [/b]