Pre-Algebra Examples

\cos (x)

$\cos (x)$ ,

x = \frac{π}{2}

$x = \frac{π}{2}$

Step 1

Replace the variable

x

$x$ with

\frac{π}{2}

$\frac{π}{2}$ in the expression.

\cos (\frac{π}{2})

$\cos (\frac{π}{2})$

Step 2

The exact value of

\cos (\frac{π}{2})

$\cos (\frac{π}{2})$ is

0

$0$ .

0

$0$

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[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$