What is the period and frequency for sin(2pi t / 5)?

period of ##sin((2pi)/5t) = 5##
frequency of ##sin((2pi)/5t) = 1/5##
##sin(theta)## has a period of ##2pi## relative to ##theta##
##rArr sin((2pi)/5t)## has a period of ##2pi## relative to ##(2pi)/5t##
##rArr Sin((2pi)/5t)## has a period of ##(2pi)/((2pi)/5) = 5## relative to ##t##
frequency is the reciprocal of period