diff --git a/docs/kcl/cos.md b/docs/kcl/cos.md
index 42c52f11b..502a20f49 100644
--- a/docs/kcl/cos.md
+++ b/docs/kcl/cos.md
@@ -1,10 +1,10 @@
 ---
 title: "cos"
-excerpt: "Computes the sine of a number (in radians)."
+excerpt: "Computes the cosine of a number (in radians)."
 layout: manual
 ---
 
-Computes the sine of a number (in radians).
+Computes the cosine of a number (in radians).
 
 
 
diff --git a/docs/kcl/std.json b/docs/kcl/std.json
index d3efab25f..e3b774ab3 100644
--- a/docs/kcl/std.json
+++ b/docs/kcl/std.json
@@ -22386,7 +22386,7 @@
   },
   {
     "name": "cos",
-    "summary": "Computes the sine of a number (in radians).",
+    "summary": "Computes the cosine of a number (in radians).",
     "description": "",
     "tags": [
       "math"
diff --git a/src/wasm-lib/kcl/src/std/math.rs b/src/wasm-lib/kcl/src/std/math.rs
index 4514aef11..478d26df5 100644
--- a/src/wasm-lib/kcl/src/std/math.rs
+++ b/src/wasm-lib/kcl/src/std/math.rs
@@ -18,7 +18,7 @@ pub async fn cos(args: Args) -> Result<MemoryItem, KclError> {
     args.make_user_val_from_f64(result)
 }
 
-/// Computes the sine of a number (in radians).
+/// Computes the cosine of a number (in radians).
 ///
 /// ```no_run
 /// const anotherVar = cos(2*pi())