API Reference > geometry-core > CartesianGeometry > Vector3d > planarRadiansTo planarRadiansTo Method Return the (radians as a simple number, not strongly typed Angle) radians from this vector to vectorB. The returned angle can be positive or negative, with magnitude no larger than PI radians Use signedRadiansTo` to take have angle measured in other planes. planarRadiansTo(vector: Vector3d, planeNormal: Vector3d): number Parameter Type Description vector Vector3d planeNormal Vector3d Returns - number Defined in core/geometry/src/geometry3d/Point3dVector3d.ts Line 1162 Last Updated: 13 June, 2024