Math Help - Need Help with basic Arc secant

1. Need Help with basic Arc secant

How do you find arcsecant= 3.291 in this value range: 90 degrees< arc <180 degrees.

I need to see how to do it. Thank you.

2. Originally Posted by Zachbar
How do you find arcsecant= 3.291 in this value range: 90 degrees< arc <180 degrees.

I need to see how to do it. Thank you.
What you wish to find is an angle x such that
$sec(x) = 3.291$

$\frac{1}{cos(x)} = 3.291$

$cos(x) = \frac{1}{3.291}$

$x = acs \left ( \frac{1}{3.291} \right )$

-Dan