---
title: "atan2(_:_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/atan2(_:_:)-4dpoz"
---

# atan2(_:_:)

Returns the arctangent of each pair of corresponding elements in two vectors.

## Declaration

```swift
func atan2(_ y: simd_float2, _ x: simd_float2) -> simd_float2
```

## See Also

### Trigonometric Functions

- [acos(_:)](simd/acos(_:)-1ya4v.md)
- [asin(_:)](simd/asin(_:)-4tbvj.md)
- [atan(_:)](simd/atan(_:)-5v3x.md)
- [cos(_:)](simd/cos(_:)-59waa.md)
- [cospi(_:)](simd/cospi(_:)-2cd9u.md)
- [sin(_:)](simd/sin(_:)-5k8vo.md)
- [sinpi(_:)](simd/sinpi(_:)-524r6.md)
- [sincos(_:)](simd/sincos(_:)-4uhuq.md)
- [sincospi(_:)](simd/sincospi(_:)-11sii.md)
- [tan(_:)](simd/tan(_:)-4rx9f.md)
- [tanpi(_:)](simd/tanpi(_:)-3a1w1.md)