Operating Instructions
- The device is permanently in working condition, ready for operation at any time.
- By grasping and moving the rounded handle, you can set the lever to any angle. The arm from the center of the circle intersects the circumference of the circle, which shows a 360° scale.
- Watch the outer arrows. Those on the peripheral scales show the values of sine (side edges) and cosine (top and bottom) of the selected angle.
- Pay attention to the graphics on the right side of the experiment, where the topic is briefly explained, with the added value of tangent, a similar principle working with the ratio of the legs.
Educational Significance – Exhibit Concept: Trigonometric functions relate a right-angled triangle to the ratio of two of its sides. They have wide applications in geometry and are used in many practical construction applications (e.g., in engineering, construction, geodesy, navigation, celestial mechanics). Triangulation is used in transportation (e.g., for locating aircraft). They are related not only to geometry but also to many other areas of mathematics, and in solving spatial motion problems. The ability to understand the topic in one image offers an advantage in education. The Unit Circle contains everything on the topic that needs to be either understood or just verified.
Specification: The solid base is made of a wooden board connecting the structural elements for controlled movement. It contains informative numerical data on the scales to determine or set angles and display the parameters of trigonometric functions. The exhibit configuration is wall-mounted. The dimensions of the panel with the functional part are 100 cm high x 95 cm wide, with a depth of approximately 4 cm. The info panel is 100 cm high x 65 cm wide with a graphical explanation of the basic trigonometric functions.
