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)

$15 each

step-by-step explanation:

$45/3 children= $15 each

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation:

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation:

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.