1 Addition formula cos(α+β)=cosα·cosβ-sinα·sinβ cos(α-β)=cosα·cosβ+sinα·sinβ sin(α±β)=sinα·cosβ±cosα·sinβ tan(α+β)=(tanα+tanβ)/(1-tanα·tanβ) tan(α-β)=(tanα-tanβ)/(1+tanα·tanβ) 2 Double-angle formula sin(2α)=2sinα·cosα=...
double angle formula 倍角公式 eccentricity 离心率 ellipse 椭圆 ellipsoid 椭球 equilateral triangle 等边三角形 exterior angle 外角 focal point 焦点 focus 焦点 hemisphere 半球 heptagon 七边形 hexagon 六边形 horizontal line 水平线 hyperb...
1 Addition formula cos(α+β)=cosα·cosβ-sinα·sinβ cos(α-β)=cosα·cosβ+sinα·sinβ sin(α±β)=sinα·cosβ±cosα·sinβ tan(α+β)=(tanα+tanβ)/(1-tanα·tanβ) tan(α-β)=(tanα-tanβ)/(1+tanα·tanβ) 2 Double-angle formula sin(2α)=2sinα·cosα=...
double angle formula倍角公式 eccentricity离心率 ellipse椭圆 ellipsoid椭球 equilateral triangle等边三角形 exterior angle外角 focal point焦点 focus焦点 hemisphere半球 heptagon七边形 hexagon六边形 horizontal line水平线 hyperbola双曲线 hyperboloid双曲面 hypotenuse...
double angle formula倍角公式 eccentricity离心率 ellipse椭圆 ellipsoid椭球 equilateral triangle等边三角形 exterior angle外角 focal point焦点 focus焦点 hemisphere半球 heptagon七边形 hexagon六边形 horizontal line水平线 hyperbola双曲线 hyperboloid双曲面 hypotenuse斜边 ...
2 Double-angle formula sin(2α)=2sinα·cosα=2/(tanα+cotα) cos(2α)=(cosα)^2-(sinα)^2=2(cosα)^2-1=1-2(sinα)^2 tan(2α)=2tanα/(1-tan^2α) 3 Simplify Asinα+Bcosα 4 Identity sina)^2+(cosa)^2=1
disc 圆盘 distance 距离 dodecagon 十二边形 double angle formula 倍角公式 eccentricity 离心率 ellipse 椭圆 ellipsoid 椭球 equilateral triangle 等边三角形 exterior angle 外角 focal point 焦点 focus 焦点 hemisphere 半球 heptagon 七边形 hexagon 六边形 horizontal line 水平线 hyperbola 双曲线 hyperboloid 双曲...
Compound angle formulae A-Level Mathematics revision (AS and A2) section looking at compound angle formulae and double angle formulae.
3.6 3.2.2 Compound angle formula(application) 26:22 3.7 3.3.1 Double angel formulae 39:14 3.8 3.3.2 Double angel formulae 14:49 3.9 3.4 Expressing asinθ+bcosθ in the form R sin(θ±a) or Rcos(θ±a) 37:21 Chapter 4 Differentiation ...
Double-angle formulasLemniscate functionJacobian elliptic functionsp-LaplacianIn this paper, we will establish some double-angle formulas related to the inverse function of \\int _0^x ext {d}t/\\sqrt{1-t^6} \\int _0^x ext {d}t/\\sqrt{1-t^6} . This function appears in Ramanujan's...