If you are a sci-fi anime lover, you might be amused by the fact that the main character of Dr. Stone, Senku Ishigami can tell the time using a small device called a sextant from a cliff looking towards the Sun. Well, what goes behind the scenes is that sextant is a device that can measure longitude (you must know that 1-degree longitude is equivalent to 54.6 miles or 4 minutes), the distance between the celestial bodies by the use of basic trigonometry principles.
Do you know what comes to hand when astronauts/pilots decide the flight path angle of the spacecraft or airplane? The truth is they design it in such a way that the airplanes are so flown making a parabola in certain angles to give different values of acceleration due to gravity (g). The same mechanism is used to experience zero gravity or gravity of any other planets or satellites on earth.
Trigonometry is not only limited to space, distance or flights. Talking about its more uses, the measurement of skyscrapers to mountains is all done by taking the angle of elevation through a theodolite, measuring the distance between the viewer and the objects with the use of trigonometry. Also, the engineers use various trigonometry-based devices to construct bridges and buildings.
Furthermore, trigonometry is also used by blood spatter analysts to solve crimes. These professionals take the angles and measurements of blood spattering to determine if the victim committed suicide or if they were murdered, the instruments used, and the angle at which the victim was stabbed or shot. A perfect example would be the character Dexter from the series Dexter who tries to explain the crime scene with the help of blood spattering.
There are various other uses of trigonometry in our real life. The aforementioned applications are some of the greatest applications that are used in our daily life for our convenience. And all thanks to the great minds such as Persian polymath Nasir al-Din al-Tusi, Hipparchus of Nicaea (founder of trigonometry) for creating such a useful mathematical tool, embarking the age of primitives to the age of advancement and technology.
