In the study of circular functions, the unit circle plays a central role in linking angles with trigonometric values. By defining sine, cosine, and tangent in terms of coordinates on a circle of ...

At the heart of trigonometry lie the fundamental trigonometric ratios: sine, cosine, and tangent. These ratios relate the angles of a right triangle to the lengths of its sides. While these reciprocal ...

Download and open circle.html to explore an interactive unit circle. Drag the point around the edge of the circle to change the angle and interact with the unit circle. Special angles (30°, 45°, 60°) ...