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 ...

Our new research, published in Historia Mathematica, shows that the Babylonians were able to construct a trigonometric table using only the exact ratios of sides of a right-angled triangle.

They are known as the three trigonometric ratios because they show how large one side is compared to the other based on an angle Ɵ. Practise trigonometric ratios in similar right angled triangles ...

The Babylonian civilization was at its peak roughly 4,000 years ago, with architecturally advanced cities throughout the region known today as Iraq. Babylonians were especially brilliant with math ...

In the case of rectangles, they preferred the side lengths to be in proportion as the golden ratio. So what? Divide this by 2 and you get 0.80901699437494..., which agrees with our calculation of ...

There are three main trigonometric functions - Sine θ (sin θ), Cosine θ (cos θ) and Tangent θ (tan θ). Sin θ - Ratio of Perpendicular to Hypotenuse Cos θ - Ratio of Base to Hypotenuse Tan ...