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- Trigonometric functions - Wikipedia
Sin (θ), Tan (θ), and 1 are the heights to the line starting from the x -axis, while Cos (θ), 1, and Cot (θ) are lengths along the x -axis starting from the origin If the acute angle θ is given, then any right triangles that have an angle of θ are similar to each other This means that the ratio of any two side lengths depends only on θ
- Sine, Cosine and Tangent - Math is Fun
Sine, Cosine and Tangent (often shortened to sin, cos and tan) are each a ratio of sides of a right angled triangle: To calculate them: Divide the length of one side by another side Example: What is the sine of 35°? Using this triangle (lengths are only to one decimal place): = 0 57 = 0 82 = 0 70
- Tangent - Math. net
For a right triangle with one acute angle, θ, the tangent value of this angle is defined to be the ratio of the opposite side length to the adjacent side length This is sometimes referred to as the tangent formula, and is written as follows: The sides of the right triangle are referenced as follows: Opposite: the side opposite θ
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