setting time period of sine/cosine wave

[ashit12]

is it possible to manually set the time period of the sine or cosine wave? I need to generate text in the shape of one semi/quarter circle and if I could set the time period, I could get text similar to that. Also, is it possible to set the amplitude of the sine wave?

[Belval]

Could be a cool feature to add, I'll look into it.