Trigonometry Examples

$g (x) = 4 \cos (2 x - π) - 2$

Step 1

Factor $2$ out of $4 \cos (2 x - π)$ .

$g (x) = 2 (2 \cos (2 x - π)) - 2$

Step 2

Factor $2$ out of $- 2$ .

$g (x) = 2 (2 \cos (2 x - π)) + 2 (- 1)$

Step 3

Factor $2$ out of $2 (2 \cos (2 x - π)) + 2 (- 1)$ .

$g (x) = 2 (2 \cos (2 x - π) - 1)$