sin and tan

These are the formulas of the triangles.The triangle is a right angle of two sharp angles in short.Cos is the cosine theorem, which is the adjacent edge of the acute angle divided by the hypotenuse of the triangle.Sin is the sine theorem, which is

Introduction to Python: An Example of trigonometric function tan (), pythontan Description Tan () returns the sine of x radians. Syntax The syntax of the tan () method is as follows: import mathmath.tan(x) Note: tan () cannot be accessed directly.

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:

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

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

This article uses a very idealized model to roughly calculate daylight hours and midday moments, and to calculate the time of sunrise and the day. How do you calculate Daylight time? Or, how do you calculate the percentage of daylight time in

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

Recently, I learned about Android Image Processing in the system (I collected some information on the Internet and compiled my own testing program.) Here I will summarize: I. colormatrix class Colormatrix is a 5x4 matrix. The first line indicates

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