A tradition in the United States is to drape an American flag over the casket of a

Question:

A tradition in the United States is to drape an American flag over the casket of a deceased U.S. Forces veteran. At the burial, the flag is removed, folded into a triangle, and presented to the family. The folded flag will fit in a case in the form of an isosceles right triangle, as shown below. The inside dimension across the bottom of the case is 2112 in. Using trigonometric functions, find the length x and round the answer to the nearest tenth of an inch.