Answer:
I think it is B or possibly c!
Step-by-step explanation:
a+bi
i Believe its A. B. And D. But i could be wrong
30.
first term = a
3r term = ar^2
So here ar^2/ a = r^2
r^2 = 5/180 = 1/36
r = 1/6
So missing term = 180 * 1/6 = 30.
