basic sin

This article mainly introduces the Math. sin () method used for rounding in JavaScript. it is the basic knowledge in JS learning. if you need it, you can refer to this method to return the sine of a number. The sin method returns a value ranging

Description: The following text, gray for blowing hydrology, black for the body, blue for the use of the parameters in the actual application of the instructions.The cause is this. Time back to the end of 07, 4G Square Hing, next door next door

Note: This article is starting in QQ space (because of the need to peer acquaintances to correct). Because of the closure of QQ, here to re-paste once. This address: http://blog.csdn.net/madongchunqiu/article/details/18614233Description: The

1. Coordinate system:Flash coordinate system and mathematical coordinate system: the X axis is the same, and the y axis is the opposite.[Mathematical coordinate system][Coordinate system in Flash]2. Conversion between Angle and Radian:(1) radians:

Previously, I learned about matrices in linear algebra and had some knowledge about the basic operations of matrices. I learned how to use matrices to change images when I used GDI + some time ago, after reading this article, I will summarize it

Control and representation of graphics (figure control and representation)The functions and commands provided by MATLAB for graphical control:Axis: Manually select an axis size.CLF: Clear the graphics window.Ginput: Use the mouse crosshair

Matrix learning-Basic Knowledge Previously, I learned about matrices in linear algebra and had some knowledge about the basic operations of matrices. I learned how to use matrices to change images when I used GDI + some time ago, after reading this

In the linear algebra before learning the matrix, there are some understanding of the basic operation of the Matrix, some time ago in the use of GDI + to learn how to use the matrix to change the image, after reading here to summarize the

Previously, I learned about matrices in linear algebra and had some knowledge about the basic operations of matrices. I learned how to use matrices to change images when I used GDI + some time ago, after reading this article, I will summarize it

Basic Relationship Between trigonometric functions of the same angle Reciprocal Relationship: Business Relationship: Square relationship: Tan α-cot α = 1Sin α-CSC α = 1Cos α-sec α