# Infinite Sum Practice

Calculus Level 4

Find the value of $S= \dfrac{\cos 0}{e^0 \cdot 0!}+ \dfrac{\cos 1}{e^1 \cdot 1!}+\dfrac{\cos 2}{e^2 \cdot 2!}+ \cdots$

$$\textbf{Details and Assumptions}$$

• In $$\cos n$$, $$n$$ is considered to be in $$\textbf{radians}$$.
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