### Question

## Given the X Angle and Y Angle from the Surface Plane tool, how do I find the surface normal vector?

### Answer

Sensor Model | G2xxx, G3xxx |

Firmware Version | All |

SDK Version | n/a |

The surface normal of a plane measured with the Surface Plane tool has the following vector:

n_{x} |
-sin(Y_angle) |

n_{y} |
-sin(X_angle) * cos(Y_angle) |

n_{z} |
cos(X_angle) * cos(Y_angle) |

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