diff --git a/education/math/MATH1060 (trig)/The Unit Circle.md b/education/math/MATH1060 (trig)/The Unit Circle.md
index 8bbfdd2..59f62a4 100644
--- a/education/math/MATH1060 (trig)/The Unit Circle.md	
+++ b/education/math/MATH1060 (trig)/The Unit Circle.md	
@@ -18,6 +18,15 @@ $$ sin(\theta) = y $$
 
 ![image](./assets/unitcirc.png)
 
+Finding a reference angle:
+
+| Quadrant | Formula               |
+| -------- | --------------------- |
+| 1        | $\theta$              |
+| 2        | $180\degree - \theta$ |
+| 3        | $\theta - 180\degree$ |
+| 4        | $360\degree - \theta$ |
+
 ## The Pythagorean Identity
 The Pythagorean identity expresses the Pythagorean theorem in terms of trigonometric functions. It's a basic relation between the sine and cosine functions.
 $$ sin^2 \theta + cos^2 \theta = 1 $$