## What is atan2 vs atan?

The atan() and atan2() functions calculate the arctangent of x and y/x , respectively. The atan() function returns a value in the range -π/2 to π/2 radians. The atan2() function returns a value in the range -π to π radians.

What does the function atan2 do?

atan2() function returns the angle in the plane (in radians) between the positive x-axis and the ray from (0,0) to the point (x,y), for Math.

### What does atan2 do in Matlab?

atan2( Y , X ) computes the four-quadrant inverse tangent (arctangent) of Y and X . If Y and X are vectors or matrices, atan2 computes arctangents element by element.

How do you write an atan2 function?

In the C Programming Language, the atan2 function returns the arc tangent of y / x.

1. Syntax. The syntax for the atan2 function in the C Language is: double atan2(double y, double x);
2. Returns. The atan2 function returns the arc tangent of y / x.
4. Applies To.
5. atan2 Example.
6. Similar Functions.

## Should I use atan or atan2?

In conclusion, if you are calculating something that ranges between -90 and 90 degrees like latitude, use arctan. If calculating an angle that can be between -180 and 180 degrees, use arctan2.

Is atan2 better than Atan?

### What is atan2 on calculator?

ATAN2(y,x) returns the arc tangent of the two numbers x and y. It is similar to calculating the arc tangent of y / x, except that the signs of both arguments are used to determine the quadrant of the result. The result is an angle expressed in radians.

Is ATAN2 arctan?

The atan2 function takes two values (y and x). ATAN2 Four quadrant inverse tangent. ATAN2(Y,X) is the four quadrant arctangent of the real parts of the. elements of X and Y.

## What is the range of ATAN2?

Return Value The atan() function returns a value in the range -π/2 to π/2 radians. The atan2() function returns a value in the range -π to π radians.

What’s the difference between Atan and atan2 functions?

The number of parameters is different; atan is a single parameter, atan2 is two parameters 2. The advantage of atan2 is that if x2-x1 is equal to 0, the angle can still be calculated, but atan function needs to be judged in advance, otherwise it will lead to program error; Conclusion: atan and atan2 functions should be used;

### When to use Atan and atan2 in MySQL?

ATAN2 () function in MySQL is used for return the arc tangent between specified two number, i.e., x and y. It returns the angle between the positive x-axis and the line from the origin to the point (y, x). Parameter : This method accepts one parameter as mentioned above and described below :

Can you use Atan to determine a quadrant?

You cannot use atan2 to determine the quadrant, you can use atan2 only if you already know which quadrant your in! In particular positive x and y imply the first quadrant, positive y and negative x, the second and so on. atan or atan2 themselves simply return a positive or a negative number, nothing more.

## What’s the difference between Atan and arctan in math?

Now everybody knows atan, it’s just inverse tangent, arctan, just as we know it in math. If we have vector v with coordintes [x,y], and we calcualte atan (x,y), we cannot really tell in which quadrant the vector v is in. Absolute value of this result just tells us the smallest angle between the vector v and X-axis.