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Trigonometric functions - Wikipedia
In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are functions of an angle.They relate the angles of a triangle to the lengths of its sides.

Mathwords: Cotangent
cotangent cot ctg. The trig function cotangent, written cot θ. cot θ equals or .For acute angles, cot θ can be found by the SOHCAHTOA definition, shown below on the left.

Definition of Cotangent - Math Is Fun
In a right angled triangle, the cotangent of an angle is: The length of the adjacent side divided by the length of the opposite side. The abbreviation is cot

Hyperbolic Cotangent -- from Wolfram MathWorld
Mathematica » The #1 tool for creating Demonstrations and anything technical. Wolfram|Alpha » Explore anything with the first computational knowledge engine.

Express Sine in Terms of Cotangent - dummies
Even though each trigonometry function is perfectly wonderful, being able to express each trig function in terms of one of the other five trig functions is frequently to your advantage. For example, you may have some sine terms in an expression that you want to express in terms of cotangent, so that ...

Math Words, pg 8 -
Amplitude is used in mathematics as a term for size or magnitude. The origin is the same Indo-European ple root that gives us plus and complement. The Latin source was amplus for wide.

Trigonometric identities. Topics in trigonometry.
20. TRIGONOMETRIC IDENTITIES. Reciprocal identities. Tangent and cotangent identities. Pythagorean identities. Sum and difference formulas. Double-angle formulas

The Sine and Cosine Functions - Properties
Sine and Cosine: Properties. The sine function has a number of properties that result from it being periodic and odd.The cosine function has a number of properties that result from it being periodic and even.

Hyperbolic function - Wikipedia
There are various equivalent ways for defining the hyperbolic functions. They may be defined in terms of the exponential function:. Hyperbolic sine: ⁡ = − − = − = − − −.

上述第三点中的cotangent拉普拉斯算子具有描述形体表面上各处细节特征的本领,从而促成了后续对保持表面细节的模型动画(mesh deformation)的研究(可以参考你写过什么有趣的程序?




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