Which of the following explains the relationship between angles a and b

Asinusoidal function whose frequency is 1/6pi

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.

Find a third-degree polynomial equation with rational coefficients that has roots -2 and 6+i