i need help to the product and the rectangular form for the problem below

Question

z1=1/2(cisπ/3) and z2=3(cosπ/6+isinπ/6)

Answer 1

z₁·z₂ = 3/2cis(π/3 + π/6) = 3/2(cosπ/2 + isinπ/2) = 3/2i

Answer 2