Update README.md

Signed-off-by: Fabiana 🚀  Campanari <113218619+FabianaCampanari@users.noreply.github.com>

Author: FabianaCampanari

README.md

@@ -146,7 +146,7 @@ Leonhard Euler, one of the most significant mathematicians in history, contribut
 
    ### ***Euler's Formula:***
      
-   $\huge \color{DeepSkyBlue} e^{i\theta}$ = $\cos(\theta) + i\sin(\theta)$
+   $\huge \color{DeepSkyBlue} e^{i\theta}$ = $\huge \color{DeepSkyBlue} \cos(\theta) + i\sin(\theta)$
 
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