Как вызвать возвращенное функцией значение?

def getsomething1():
    ...
    return firstarray

def getsomething2():
    ....
    return secondarray

def getsomething3(firstarray, secondarray):
    xlist = []
    for i in firstarray:
        i *= secondarray[0]
        x = sin(i)
        xlist.append(x)
    print(xlist)



getsomething1()
getsomething2()
getsomething3(firstarray, secondarray)