In this activity, you will use GeoGebra to explore how trigonometric ratios can be used to find the area of a triangle when its height is unknown. Begin by finding the area of an acute triangle. If you need help, follow these instructions for using GeoGebra.
Draw a line through point B that is perpendicular to line AB. Label the intersection of the line and line AB as point D.
Based on your construction, what do you know about triangle ABD and triangle BCD?