Question

range of
$1 \div 2\cos(x) - 1$
​

Answer 1

Answer:

$- \frac{3}{2} \: \: to \: \: - \frac{1}{2}$

Step-by-step explanation:

$= > \frac{1}{2 \: cos(x)} - 1 \\ \\ = > \: \: range \: of \: cos(x) \: has \: been \: ( - 1 \: \: \: 1) \\ \\ = > \frac{1}{2( - 1)} - 1 \: \: \: to \: \: \frac{1}{2(1)} - 1 \\ \\ = > - \frac{1}{2} - 1 \: \: \: to \: \: \frac{1}{2} - 1 \\ \\ = > - \frac{3}{2} \: \: to \: \: - \frac{1}{2}$