Express sin 404 in terms of the sine of a positive acute angle.

Arandom high school question but a hard one

What is the measure of angle tvu shown in the diagram below

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches. approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *