diff --git a/src/angle.rs b/src/angle.rs
index 403a887..6aa45a0 100644
--- a/src/angle.rs
+++ b/src/angle.rs
@@ -107,11 +107,6 @@ pub trait Angle where
     fn turn_div_4() -> Self;
     fn turn_div_6() -> Self;
 
-    #[inline]
-    fn equiv(&self, other: &Self) -> bool {
-        self.normalize() == other.normalize()
-    }
-
     fn sin(self) -> Self::Unitless;
     fn cos(self) -> Self::Unitless;
     fn tan(self) -> Self::Unitless;
diff --git a/tests/angle.rs b/tests/angle.rs
index 6a5643d..c660547 100644
--- a/tests/angle.rs
+++ b/tests/angle.rs
@@ -15,7 +15,7 @@
 
 extern crate cgmath;
 
-use cgmath::{Angle, Rad, Deg, rad, deg};
+use cgmath::{Rad, Deg, rad, deg};
 use cgmath::ApproxEq;
 
 #[test]
@@ -36,14 +36,3 @@ fn conv() {
     let angle: Rad<_> = angle.into();
     assert!(angle.approx_eq(&rad(30.0f64)));
 }
-
-#[test]
-fn equiv() {
-    assert!(Deg::<f32>::full_turn().equiv(&-Deg::<f32>::full_turn()));
-    assert!(Deg::<f32>::turn_div_2().equiv(&-Deg::<f32>::turn_div_2()));
-    assert!((Deg::<f32>::turn_div_3() - Deg::<f32>::full_turn()).equiv(&Deg::<f32>::turn_div_3()));
-
-    assert!(Rad::<f32>::full_turn().equiv(&-Rad::<f32>::full_turn()));
-    assert!(Rad::<f32>::turn_div_2().equiv(&-Rad::<f32>::turn_div_2()));
-    assert!((Rad::<f32>::turn_div_3() - Rad::<f32>::full_turn()).equiv(&Rad::<f32>::turn_div_3()));
-}