Students are taught the "unit circle" and its relationship to trigonometry, but many fail to make the leap on how crucial circles are for trig functions. With static graphs and equations ...

As this set line sweeps around, it would create a circle. AH HA! You knew trig was really about circles. Alas, not really. It just happens that it's easy to show trig functions with a circle ...

In high school, you probably learned that trigonometric functions – like sine, cosine and tangent –can be derived, geometrically, from a circle (hence why trig functions are also known as ...

"It's all very well to do if you're working on a sphere or a circle ... trigonometry". But sine, cosine and tangent, are usually only approximated, he says, making them "transcendental functions".

Trigonometry Formulas: There are very few topics in mathematics that trouble students more than trigonometry and calculus. In fact, it is the base of many advanced math concepts and is also ...

When applied to an angle measure, the three trigonometric functions produce the various combinations of ratios of side lengths. In other words: The tangent of angle A = the length of the opposite ...