Angle bisector

Pictured here is clock that is at approximately 3:05 and 25 seconds. The hour hand acts as an angle bisector between the angle formed by the minute and second hands. I know it bisects this angle, forming two congruent angles, because there is exactly ten minutes between the hour hand and both the minute and second hands. Clocks like the one pictured have been around since about the 12th century and have been an amazingly useful invention ever since. Knowing the time of day is something we take for granted with our phones now but it's something we just always need to know and it constantly effects our lives. I believe that nearly every person in the world has seen a clock at some point in their lives. Clocks can be found on watches, iPhones, and simply clocks on the wall. 

I found this image online at this address: https://sites.google.com/site/mymathclassroom/trigonometry/clock-angle-problems/clock-angle-problems-involving-second-hands