VB中反三角函數(shù)怎么表示

反正切： Atn

安義網(wǎng)站建設(shè)公司創(chuàng)新互聯(lián),安義網(wǎng)站設(shè)計制作，有大型網(wǎng)站制作公司豐富經(jīng)驗。已為安義1000多家提供企業(yè)網(wǎng)站建設(shè)服務(wù)。企業(yè)網(wǎng)站搭建\外貿(mào)網(wǎng)站建設(shè)要多少錢，請找那個售后服務(wù)好的安義做網(wǎng)站的公司定做！

反正弦 ： Arcsin(X) = Atn(X / Sqr(-X * X + 1))

反余弦： Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)

在vb中。如何進(jìn)行三角函數(shù)的程序代碼編寫

有幾個地方要注意：

1、VB中的三角函數(shù)的角度全部是用弧度制表示的，如果是度數(shù)的話，應(yīng)先乘以180再除以π轉(zhuǎn)成弧度，再用函數(shù)計算結(jié)果。

2、VB中直接支持的三角函數(shù)有：Sin()、Cos()、Tan()，如果涉及到其它三角函數(shù)，可以從下面列出的代碼中自己選擇相應(yīng)的函數(shù)：

Function

Sec(X)

As

Double

'正割

Sec

=

1

/

Cos(Angle)

End

Function

Function

Csc(X)

As

Double

'余割

Csc

=

1

/

Sin(Angle)

End

Function

Function

Cot(X)

As

Double

'余切

Cot

=

1

/

Tan(Angle)

End

Function

Function

ArcSin(X)

As

Double

'反正弦

ArcSin

=

Atn(X

/

Sqr(-X

*

X

+

1))

End

Function

Function

ArcCos(X)

As

Double

'反余弦

ArcCos

=

Atn(-X

/

Sqr(-X

*

X

+

1))

+

2

*

Atn(1)

End

Function

Function

ArcSec(X)

As

Double

'反正割

ArcSec

=

Atn(X

/

Sqr(X

*

X

-

1))

+

Sgn((X)

-

1)

*

(2

*

Atn(1))

End

Function

Function

ArcCsc(X)

As

Double

'反余割

ArcCsc

=

Atn(X

/

Sqr(X

*

X

-

1))

+

(Sgn(X)

-

1)

*

(2

*

Atn(1))

End

Function

Function

ArcCot(X)

As

Double

'反余切

ArcCot

=

Atn(X)

+

2

*

Atn(1)

End

Function

Function

HSin(X)

As

Double

'雙曲正弦

HSin

=

(Exp(X)

-

Exp(-X))

/

2

End

Function

Function

HCos(X)

As

Double

'雙曲余弦

HCos

=

(Exp(X)

+

Exp(-X))

/

2

End

Function

Function

HTan(X)

As

Double

'雙曲正切

HTan

=

(Exp(X)

-

Exp(-X))

/

(Exp(X)

+

Exp(-X))

End

Function

Function

HSec(X)

As

Double

'雙曲正割

HSec

=

2

/

(Exp(X)

+

Exp(-X))

End

Function

Function

HCsc(X)

As

Double

'雙曲余割

HCsc

=

2

/

(Exp(X)

-

Exp(-X))

End

Function

Function

HCot(X)

As

Double

'雙曲余切

HCot

=

(Exp(X)

+

Exp(-X))

/

(Exp(X)

-

Exp(-X))

End

Function

Function

HArcsin(X)

As

Double

'反雙曲正弦

HArcsin

=

Log(X

+

Sqr(X

*

X

+

1))

End

Function

Function

HArccos(X)

As

Double

'反雙曲余弦

HArccos

=

Log(X

+

Sqr(X

*

X

-

1))

End

Function

Function

HArctan(X)

As

Double

'反雙曲正切

HArctan

=

Log((1

+

X)

/

(1

-

X))

/

2

End

Function

Function

HArcsec(X)

As

Double

'反雙曲正割

HArcsec

=

Log((Sqr(-X

*

X

+

1)

+

1)

/

X)

End

Function

Function

HArccsc(X)

As

Double

'反雙曲余割

HArccsc

=

Log((Sgn(X)

*

Sqr(X

*

X

+

1)

+

1)

/

X)

End

Function

Function

HArccot(X)

As

Double

'反雙曲余切

HArccot

=

Log((X

+

1)

/

(X

-

1))

/

2

End

Function

VB里怎么用反三角函數(shù)請詳細(xì)點(diǎn)

Atn()是VB反正切函數(shù),VB不提供其他反三角函數(shù),不過可以用下列公式導(dǎo)出：ArcTan(X) = Atn(X)Arcsin(X) = Atn(X / Sqr(-X * X + 1))Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)