Graph Using a Table of Values f(x)=cos(x)

$f (x) = \cos (x)$

Step 1

Substitute $- 2$ for $x$ and find the result for $y$ .

$y = \cos (- 2)$

Step 2

Solve the equation for $y$ .

Remove parentheses.

$y = \cos (- 2)$

Evaluate $\cos (- 2)$ .

$y = 0.99939082$

Step 3

Substitute $- 1$ for $x$ and find the result for $y$ .

$y = \cos (- 1)$

Step 4

Solve the equation for $y$ .

Remove parentheses.

$y = \cos (- 1)$

Evaluate $\cos (- 1)$ .

$y = 0.99984769$

Step 5

Substitute $0$ for $x$ and find the result for $y$ .

$y = \cos (0)$

Step 6

Solve the equation for $y$ .

Remove parentheses.

$y = \cos (0)$

The exact value of $\cos (0)$ is $1$ .

$y = 1$

Step 7

Substitute $1$ for $x$ and find the result for $y$ .

$y = \cos (1)$

Step 8

Solve the equation for $y$ .

Remove parentheses.

$y = \cos (1)$

Evaluate $\cos (1)$ .

$y = 0.99984769$

Step 9

Substitute $2$ for $x$ and find the result for $y$ .

$y = \cos (2)$

Step 10

Solve the equation for $y$ .

Remove parentheses.

$y = \cos (2)$

Evaluate $\cos (2)$ .

$y = 0.99939082$

Step 11

This is a table of possible values to use when graphing the equation.

$\begin{array}{c} x & y \\ - 2 & 0.99939082 \\ - 1 & 0.99984769 \\ 0 & 1 \\ 1 & 0.99984769 \\ 2 & 0.99939082 \end{array}$

Step 12

Graph Using a Table of Values f(x)=cos(x)

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