PLEASE HURRY I need help with this question. I will mark brainliest ONLY IF answered correctly. Find values of k so that each of the following functions has the indicated period.

a). f(t) = cos kt; period π
b). g(t) = cos kt; period π/2
c). h(t) = cos kt; period 6π
d). j(t) = sin kt; period 10
e). p(t) = cos kt; period 0.1
f). s(t) = 4 cos kt + 15; period 1/60