Calculus Examples

$lim_{x \to \frac{π}{2}} \cos (x)$

Step 1

Move the limit inside the trig function because cosine is continuous.

$\cos (lim_{x \to \frac{π}{2}} x)$

Step 2

Evaluate the limit of $x$ by plugging in $\frac{π}{2}$ for $x$ .

$\cos (\frac{π}{2})$

Step 3

The exact value of $\cos (\frac{π}{2})$ is $0$ .

$0$