Use the tangent ratio: Method marks are given for correctly using the tangent ratio and applying the inverse function. Remember to follow any instructions. The answer must be given to 1 decimal place.

Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States ...

Division of Preclinical Innovation, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, Maryland 20850, United States ...