posted by Lisa .
1)A piano tuner uses a tuning fork. If middle C has a frequency of 264 vibrations per second, write an equation in the form d=sinw(t) for the simple harmonic motion.
2) Verify the identity
I'm not completely sure on the first one, but I think it looks like
d=sin(264*t) Check your text for a worked example.
The second one is algebra.
Can you finish it?