Which, if any, of the following is incorrect a. sin A = 29/21
b. cos A = 20/29
c. tan A = 21/20
d. all of the above are correct

(picture included) (please help, i need to pass this to pass my class)

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.