---
title: "+=(_:_:)"
framework: spatial
role: symbol
role_heading: Operator
path: "spatial/angle2dfloat/+=(_:_:)"
---

# +=(_:_:)

Adds two angles and stores the result in the left-hand-side variable.

## Declaration

```swift
static func += (lhs: inout Angle2DFloat, rhs: Angle2DFloat)
```