C+3ci=4+di find the values of c and d that make each other true

Hmm
see if we can simplify
assuming that C=c

hmm

a+bi=c+di, assume a=c and b=d
we could have
c=4 and 3c=d
then d=12

c=4 and d=12

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.