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常見三角函數公式@ 別搗蛋:: 痞客邦PIXNET :: - wywu 中文名, 正弦, 餘弦, 正切, 餘切, 正割, 餘割. 英文名, sine, cosine, tangent, cotangent, secant, cosecant. 縮寫, sin, cos, tan, cot, sec, csc. 週期性. 餘角公式, (誘導公式) ...
sin, cos, tan的公式及關係- Yahoo!知識+ 2007年5月3日 - 正弦sine (sin),餘弦cosine (cos)和正切tangent (tan)是常用的三角函數,說簡單點就是 ...
三角函数_百度百科 跳到 反函数 - 三角函数的反函数,是多值函数。它们是反正弦Arcsin x,反余弦Arccos x,反正切Arctan ...
Mathematica 9|Mathematica下載 9.0.0.1 簡體中文版(附圖文安裝教程) - 新雲軟體下載 Sin[x],Cos[x],Tan[x],Cot[x],Sec[x],Csc[x] 三角函數,其引數的單位為弧度 Sinh[x],Cosh[x],Tanh[x],… 雙曲函數 ArcSin[x],ArcCos[x],ArcTan[x] 反三角函數 ArcCot[x],ArcSec[x],ArcCsc[x] ArcSinh[x],ArcCosh[x],ArcTanh[x],… 反雙曲函數 Sqrt[x] 根號
MySQL中文參考手冊- 7 MySQL 語言參考 7 MySQL語言參考 7.1 文字:怎麼寫字符串和數字 7.1.1 字符串 一個字符串是一個字符序列,由單引號(“'”)或雙引號(“"”)字符(後者只有你不在ANSI模式運行)包圍。例如: 'a string' "another string" 在字符串內,某個順序有特殊的意義。
Derivatives of sin x, cos x, tan x, e^x and ln x | Chain rule | Khan Academy tan(2x) - cot(2x) = sin(2x)/cos(2x) - (cos(2x)/sin(2x)) Find and use a common denominator: = [sin^2(2x) - cos^2(2x)] / sin(2x)cos(2x) Remember that `cos(2a) = cos^2(a) - sin^2(a)` so `-cos(2a) = sin^2(a) - cos^2(a)` so `-cos(4a) = sin^2(2a) - cos^2(2a)` T
Trigonometric functions - Wikipedia, the free encyclopedia In mathematics, the trigonometric functions (also called the circular functions) are functions of an angle. They relate the angles of a triangle to the lengths of its sides. Trigonometric functions are important in the study of triangles and modeling peri