The three sides of a right-angled triangle have special names. The hypotenuse (\(h\)) is the longest side. It is opposite the right angle. The opposite side (\(o\)) is opposite the angle in question ( ...

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°) ...