diff --git a/README.md b/README.md
index 1f487aa..329e833 100644
--- a/README.md
+++ b/README.md
@@ -48,11 +48,8 @@ We can see that in the first movement (positive rotation), the green is out of p
 1. Get the absolute angle within a period
 
 Since the 2 signals correspond to a cos and sin signals, it is possible to compute the angle inside the period using arctan2 function. However, we have more than one period, it is so necessary to increment a position.
-
-```math
 $$\theta= atan2(a,b)$$
-\theta= atan2(a,b)
-```
+
 2. Incremental position
 
 To increment the position, it is necessary to start from 0 at a known postion. For that the motor is moved in open loop to one end and the position is set to 0.