When and where did trigonometry originate from?

Answer 1

It actually all started when the bridge was invented a long time ago, and people had to figure out not only how tall and wide the bridge would have to be so it wouldn't fall down, but also the degrees of measurement of the bridge that corresponds to the length of the sides of the bridge so the bridge can say secure and not fall down. A lot of times this involved right triangle trigonometry, and sometimes complex trigonometry for curving triangles or triangles that don't have a right angle. When the airplane was invented, pilots needed to calculate the number of degrees it was going to take off from the ground compared to all of the angles and distances in which it turns so the airplane can fly safely. When churches were invented too, trigonometry became really popular so people could design perfect shapes, and we wouldn't be able to do this without the tools we have today. One we became familar with all of these shapes and inventions, trigonometry involving triangles, circles, 3-d figures, and angles and distances and how that relates to the speed of a movement object compared to how fast the moving object is going and the time it takes an object to go from one place to another and what direction the moving object is going became very popular. I hope I helped!