What are the sin(na) and cos(na) functions from 2 to 10?

Answer 1

Assuming that n=2,3,4,5,6,7,8,9,10

you got sin(2a) and cos(2a)

sin(3a) and cos(3a)

sin(4a) and cos(4a)

....

sin(10a) and cos(10a)

so you plug whatever the value is of angle A into those formulas and get your answers