ActionScript has no way to find angles or radians for inverse trigonometric functions

Absolutely. :number): The return values of number are all in radians.

number):number

number):number

mtan2(y:number, x:number):number This is calculated according to the xy coordinates, and the principle is the same as the previous one.

Solution: Suppose the angle is an acute angle (because the trigonometric function is a periodic function, this can reduce many steps) so that arctan(2+ 3)= (0< i.e. tan = (2+ 3) 1

cosα=1/√[(2+√3)²+1²]=1/√(8+4√3)

√3/2)×(2/2)-(1/2)×(2/2)=(cosπ/6)×(cosπ/4)-(sinπ/6)×(sinπ/4)

cos(π/6+π/4)

cos5π/12

The inverse trigonometric function gives radians, and multiplies pi by 180 to get degrees.

If you want to calculate many inverse trigonometric functions, you can create a coefficient r2d

The radian is multiplied by r2d to get the angle.

For example: include

#include

int main()

printf("***************===");

for (i=0;i<10;i++)

return 0;}

Can't I use the built-in function?

Convert it, (atan(1) pi)*180 you can get the angle, pi is pi, is the radian, 1 radian is 180 pi.

MATLAB is a commercial mathematics software produced by Mathworks in the United States, which is a high-level technical computing language and interactive environment for algorithm development, data visualization, data analysis and numerical calculation, mainly including MATLAB and Simulink.

MATLAB is a combination of the words matrix&laboratory, which means matrix factory (matrix laboratory). It is a high-tech computing environment released by Mathworks in the United States, which mainly faces scientific computing, visualization and interactive programming.

The inverse trigonometric function is directly calculated by radians, and you can see it by looking at it directly, so I will tell you a way, because the maximum value calculated by the inverse trigonometric function is 2, that is, we rarely use such a small angle, we generally are 30 ° 45 ° 60 ° Ah, and it is rarely said that it is 10 ° or less, so the following is rare.

Of course, it can be converted into angles, multiply by 180 and divide by , some calculators can directly display the degrees, but the first step is generally radians.

The acos() method returns the inverse cosine value of x, expressed in radians.

Here's the syntax for the acos() method: acos(x) Note: This function is not directly accessible, so we need to import the math module, and then we need to call this function with a static object of math.

x - this must be a numeric value in the range - 1 to 1, if x is greater than 1 then it will produce an error.

import math

Returns the anticosine radian value of x.

Returns the arcsine radian value of x.

Convert radians to angles, such as degrees( , and return to convert angles to radians.

Note the conversion of negative angles.

>> atand(1)

ans = 45%%% trigonometric functions sin, cos, tan, etc. in matlab are all in radians.

If you want to use angles, there are two ways.

One is to use sind, cosd, tand, atand, etc., which are in angles.

The other is to use deg2rad to convert angles to radians.

Here's an example where the values of all four formulas are the same.

sin(pi/6)

sind(30)

sin(deg2rad(30))

sind(rad2deg(pi/6))

>> atan(1)*180/pi

ans =45 is calculated in radians with the function atan, and after you find it, you can convert the radian to the angle

Also, when learning MATLAB, look at the help

atan(1)*360 (2*pi), so it is the angle.

The problem is very simple, atand(1)=45,acosd(;

The angle value can be found directly with atand.

This is to turn degrees into radians.

The angle is divided by one hundred and eight, multiplied by pi.