Multiplying and Dividing in Polar Form Answers

1
6 cis (0.6)
2
2.5 cis (-0.7)
3
2cis π/4
4
12 cis 
5
cis 
6
cis 2π
7
4 cis 
8
2 cis ()
9
20 cis 
10
cis ( -)

11. 6

12. √3/2 + 0.5i