From 4f6cbb34731517dcdf0b93631f052c781e07453d Mon Sep 17 00:00:00 2001
From: Antao Almada <antao.almada@gmail.com>
Date: Fri, 20 Oct 2023 11:16:15 +0100
Subject: [PATCH] Make use of Angle.SinCo

---
 src/NetFabric.Numerics/Cartesian3/Quaternion.cs | 3 +--
 src/NetFabric.Numerics/Polar/Point.cs           | 6 ++----
 src/NetFabric.Numerics/Spherical/Point.cs       | 6 ++----
 3 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/src/NetFabric.Numerics/Cartesian3/Quaternion.cs b/src/NetFabric.Numerics/Cartesian3/Quaternion.cs
index 823664f..373e970 100644
--- a/src/NetFabric.Numerics/Cartesian3/Quaternion.cs
+++ b/src/NetFabric.Numerics/Cartesian3/Quaternion.cs
@@ -328,8 +328,7 @@ public static Quaternion<T> FromAxisAngle<T>(in Vector3<T> axis, Angle<Radians,
         where T : struct, IFloatingPoint<T>, IMinMaxValue<T>, ITrigonometricFunctions<T>
     {
         var halfAngle = angle / (T.One + T.One);
-        var sin = Angle.Sin(halfAngle);
-        var cos = Angle.Cos(halfAngle);
+        var (sin, cos) = Angle.SinCos(halfAngle);
         return new(
             axis.X * sin,
             axis.Y * sin,
diff --git a/src/NetFabric.Numerics/Polar/Point.cs b/src/NetFabric.Numerics/Polar/Point.cs
index 3b4e618..db0da67 100644
--- a/src/NetFabric.Numerics/Polar/Point.cs
+++ b/src/NetFabric.Numerics/Polar/Point.cs
@@ -354,10 +354,8 @@ public static PointReduced<TAngleUnits, TAngle, TRadius> Reduce<TAngleUnits, TAn
     public static Cartesian2.Point<T> ToCartesian<T>(Point<Radians, T, T> point)
         where T : struct, IFloatingPoint<T>, IMinMaxValue<T>, ITrigonometricFunctions<T>
     {
-        var x = point.Radius * Angle.Cos(point.Azimuth);
-        var y = point.Radius * Angle.Sin(point.Azimuth);
-
-        return new(x, y);
+        var (sin, cos) = Angle.SinCos(point.Azimuth);
+        return new(point.Radius * cos, point.Radius * sin);
     }
 
     /// <summary>
diff --git a/src/NetFabric.Numerics/Spherical/Point.cs b/src/NetFabric.Numerics/Spherical/Point.cs
index 25635ad..b5b1ac6 100644
--- a/src/NetFabric.Numerics/Spherical/Point.cs
+++ b/src/NetFabric.Numerics/Spherical/Point.cs
@@ -369,10 +369,8 @@ public static PointReduced<TAngleUnits, TAngle, TRadius> Reduce<TAngleUnits, TAn
     public static Cartesian3.Point<T> ToCartesian<T>(Point<Radians, T, T> point)
         where T : struct, IFloatingPoint<T>, IMinMaxValue<T>, ITrigonometricFunctions<T>
     {
-        var sinAzimuth = Angle.Sin(point.Azimuth);
-        var cosAzimuth = Angle.Cos(point.Azimuth);
-        var sinPolar = Angle.Sin(point.Polar);
-        var cosPolar = Angle.Cos(point.Polar);
+        var (sinAzimuth, cosAzimuth) = Angle.SinCos(point.Azimuth);
+        var (sinPolar, cosPolar) = Angle.SinCos(point.Polar);
 
         var x = T.CreateChecked(point.Radius * sinPolar * cosAzimuth);
         var y = T.CreateChecked(point.Radius * sinPolar * sinAzimuth);