Amid the chaos of revolutionary France, one man’s mathematical obsession gave way to a calculation that now underpins much of ...

Sine, cosine and tangent are the principle trigonometric functions. (Image credit: YuryZap | Shutterstock ) ...

The sine and cosine functions are ratios of sides. That means that the output of the sine and cosine function have no units (the units cancel in the ratio).

For the analytical solution I get a trig function—I don't even have to put in the numbers to understand that the solution oscillates up and down since that's what the cosine function does.

This additional symmetry makes functions like cosine incredibly useful. “Much of basic physics begins with understanding the full implications of the trigonometric functions,” said Ken Ono, a ...

Sin, cos and tan are commonly used abbreviations for the three trigonometric functions sine, cosine and tangent.

We introduce the cosine-type approximation processes in abstract Banach space setting. The historical roots of these processes go back to W. W. Rogosinski in 1926. The given new definitions use a ...

The tangent can be determined with a collection of mathematical formulas but is most commonly determined by dividing the sine function by the cosine function.