A problem about harmonic waves which is driving me maaad!!!!!?

Question

A harmonic wave, has a wavelength λ, a period Τ and an amplitude Α.Find the distance y from the equillibrium , the moment t=Τ/4 and when x=λ/6.

the equation of the y is : y=A*sin[2π(t/T - x/λ)]

heeeelp plz!!!!!!!!!!!!!

Answer 1

Um, instead of writing this question just write in the values for t and λ, namely

y = Asin(2π(1/4 - 1/6)) = Asin(π/6)