关于“sin()”函数 SIN函数是用来求某一角度的正弦值的,不是用来根据正弦值求角度的。 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 求反函数吧!先包含一个#include "math.h"直接用asin(x);-<x<1 assume X is (-1,1), tryAtn(X / Sqr(-X * X + 1)) * 180/3.1415926 Secant Sec(X) = 1 / Cos(X) Cosecant Cosec(X) = 1 / Sin(X) Cotangent Cotan(X) = 1 / Tan(X) Inverse Sine Arcsin(X) = Atn(X / Sqr(-X * X + 1)) Inverse Cosine Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1) Inverse Secant Arcsec(X) = 2 * Atn(1) – Atn(Sgn(X) / Sqr(X * X – 1)) Inverse Cosecant Arccosec(X) = Atn(Sgn(X) / Sqr(X * X – 1)) Inverse Cotangent Arccotan(X) = 2 * Atn(1) - Atn(X) Hyperbolic Sine HSin(X) = (Exp(X) – Exp(-X)) / 2 Hyperbolic Cosine HCos(X) = (Exp(X) + Exp(-X)) / 2 Hyperbolic Tangent HTan(X) = (Exp(X) – Exp(-X)) / (Exp(X) + Exp(-X)) Hyperbolic Secant HSec(X) = 2 / (Exp(X) + Exp(-X)) Hyperbolic Cosecant HCosec(X) = 2 / (Exp(X) – Exp(-X)) Hyperbolic Cotangent HCotan(X) = (Exp(X) + Exp(-X)) / (Exp(X) – Exp(-X)) Inverse Hyperbolic Sine HArcsin(X) = Log(X + Sqr(X * X + 1)) Inverse Hyperbolic Cosine HArccos(X) = Log(X + Sqr(X * X – 1)) Inverse Hyperbolic Tangent HArctan(X) = Log((1 + X) / (1 – X)) / 2 Inverse Hyperbolic Secant HArcsec(X) = Log((Sqr(-X * X + 1) + 1) / X) Inverse Hyperbolic Cosecant HArccosec(X) = Log((Sgn(X) * Sqr(X * X + 1) + 1) / X) Inverse Hyperbolic Cotangent HArccotan(X) = Log((X + 1) / (X – 1)) / 2 Logarithm to base N LogN(X) = Log(X) / Log(N) From MSDN (VB) RMB求验证识别 如何给一个表里的所有数据排序 用VB读取 word 最后一个字 inno setup 问题 取版本号问题 求教:用winsock控件,当客户端发送连接请求时,如果服务器端的connectionRequest事件里没有任何代码,客户端是否认为连接成功了? vb如何知道按了ctrl+v? 认为自己厉害的进 EXCEL中实现多选列表 求高人帮助解决一下 报表打印的问题? 在VB中如何向打印机端口直接写数据
直接用asin(x);-<x<1
Cosecant Cosec(X) = 1 / Sin(X)
Cotangent Cotan(X) = 1 / Tan(X)
Inverse Sine Arcsin(X) = Atn(X / Sqr(-X * X + 1))
Inverse Cosine Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)
Inverse Secant Arcsec(X) = 2 * Atn(1) – Atn(Sgn(X) / Sqr(X * X – 1))
Inverse Cosecant Arccosec(X) = Atn(Sgn(X) / Sqr(X * X – 1))
Inverse Cotangent Arccotan(X) = 2 * Atn(1) - Atn(X)
Hyperbolic Sine HSin(X) = (Exp(X) – Exp(-X)) / 2
Hyperbolic Cosine HCos(X) = (Exp(X) + Exp(-X)) / 2
Hyperbolic Tangent HTan(X) = (Exp(X) – Exp(-X)) / (Exp(X) + Exp(-X))
Hyperbolic Secant HSec(X) = 2 / (Exp(X) + Exp(-X))
Hyperbolic Cosecant HCosec(X) = 2 / (Exp(X) – Exp(-X))
Hyperbolic Cotangent HCotan(X) = (Exp(X) + Exp(-X)) / (Exp(X) – Exp(-X))
Inverse Hyperbolic Sine HArcsin(X) = Log(X + Sqr(X * X + 1))
Inverse Hyperbolic Cosine HArccos(X) = Log(X + Sqr(X * X – 1))
Inverse Hyperbolic Tangent HArctan(X) = Log((1 + X) / (1 – X)) / 2
Inverse Hyperbolic Secant HArcsec(X) = Log((Sqr(-X * X + 1) + 1) / X)
Inverse Hyperbolic Cosecant HArccosec(X) = Log((Sgn(X) * Sqr(X * X + 1) + 1) / X)
Inverse Hyperbolic Cotangent HArccotan(X) = Log((X + 1) / (X – 1)) / 2
Logarithm to base N LogN(X) = Log(X) / Log(N) From MSDN (VB)