## 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.

- Syntax. The syntax for the atan2 function in the C Language is: double atan2(double y, double x);
- Returns. The atan2 function returns the arc tangent of y / x.
- Required Header.
- Applies To.
- atan2 Example.
- 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.