## Trigonometry (11th Edition) Clone

$0.83798122$
$y=$arctan $1.1111111=\tan^{-1} 1.1111111$ Ensuring that the calculator is in radians, we type $\tan^{-1} 1.1111111$ into the calculator and solve: $\tan^{-1} 1.1111111\approx0.83798122$ Therefore, $y=$arctan $1.1111111\approx0.83798122$.