diff --git a/crates/nu-command/src/math/cos.rs b/crates/nu-command/src/math/cos.rs
index 80606c76a..95a97ea8c 100644
--- a/crates/nu-command/src/math/cos.rs
+++ b/crates/nu-command/src/math/cos.rs
@@ -48,7 +48,7 @@ impl Command for SubCommand {
     fn examples(&self) -> Vec<Example> {
         vec![
             Example {
-                description: "Apply the cosine to pi",
+                description: "Apply the cosine to π",
                 example: "math pi | math cos",
                 result: Some(Value::test_float(-1f64)),
             },
diff --git a/crates/nu-command/src/math/tan.rs b/crates/nu-command/src/math/tan.rs
index c03956a62..b756ce574 100644
--- a/crates/nu-command/src/math/tan.rs
+++ b/crates/nu-command/src/math/tan.rs
@@ -48,7 +48,7 @@ impl Command for SubCommand {
     fn examples(&self) -> Vec<Example> {
         vec![
             Example {
-                description: "Apply the tangent to pi/4",
+                description: "Apply the tangent to π/4",
                 example: "(math pi) / 4 | math tan",
                 result: Some(Value::test_float(1f64)),
             },
diff --git a/crates/nu-command/src/math/tanh.rs b/crates/nu-command/src/math/tanh.rs
index 679e1d1fd..89d4352a7 100644
--- a/crates/nu-command/src/math/tanh.rs
+++ b/crates/nu-command/src/math/tanh.rs
@@ -45,7 +45,7 @@ impl Command for SubCommand {
 
     fn examples(&self) -> Vec<Example> {
         vec![Example {
-            description: "Apply the hyperbolic tangent to 10*pi",
+            description: "Apply the hyperbolic tangent to 10*π",
             example: "(math pi) * 10 | math tanh",
             result: Some(Value::test_float(1f64)),
         }]
diff --git a/crates/nu-command/src/math/tau.rs b/crates/nu-command/src/math/tau.rs
index efbd93071..d18e8458e 100644
--- a/crates/nu-command/src/math/tau.rs
+++ b/crates/nu-command/src/math/tau.rs
@@ -29,9 +29,9 @@ impl Command for SubCommand {
     #[allow(clippy::approx_constant)]
     fn examples(&self) -> Vec<Example> {
         vec![Example {
-            example: "(math tau) / 2",
-            description: "Compare π and τ",
-            result: Some(Value::test_float(std::f64::consts::PI)),
+            example: "math tau | math round --precision 2",
+            description: "Get the first two decimal digits of τ",
+            result: Some(Value::test_float(6.28)),
         }]
     }