Patch 6 (citizenfx#458)

* Update Cos.md

* Update Sin.md

Co-authored-by: Technetium <[email protected]>

Author: niekschoemaker

SYSTEM/Cos.md

@@ -8,8 +8,20 @@ ns: SYSTEM
 float COS(float value);
 ```
 
+Returns the cosine of the given number.
 
 ## Parameters
-* **value**: 
+* **value**: The number of degrees (in degrees, not radians)
 
 ## Return value
+The cosine of the given number
+
+## Examples
+```lua
+-- Get the heading
+local heading = GetEntityHeading(PlayerPedId())
+local cos = Cos(heading)
+
+-- equivalent in lua
+local cosLua = math.cos(heading * (math.pi / 180))
+```

SYSTEM/Sin.md

@@ -8,8 +8,20 @@ ns: SYSTEM
 float SIN(float value);
 ```
 
+Returns the sine of the given number.
 
 ## Parameters
-* **value**: 
+* **value**: The number of degrees (in degrees, not radians)
 
 ## Return value
+The sine of the given number
+
+## Examples
+```lua
+-- Get the heading
+local heading = GetEntityHeading(PlayerPedId())
+local sin = Sin(heading)
+
+-- equivalent in lua
+local sinLua = math.sin(heading * (math.pi / 180))
+```