SOLUTION: Find z1*z2, if z1 = 4(cos 5π/4 + isin 5π/4) and z2 = 6(cos 7π/6 + isin 7π/6) https://www.dropbox.com/s/ihht1pn7hsdaiqg/Screen%20Shot%202017-11-21%20at%209.19

Algebra ->  Trigonometry-basics -> SOLUTION: Find z1*z2, if z1 = 4(cos 5π/4 + isin 5π/4) and z2 = 6(cos 7π/6 + isin 7π/6) https://www.dropbox.com/s/ihht1pn7hsdaiqg/Screen%20Shot%202017-11-21%20at%209.19      Log On


   

Question 1103013: Find z1*z2, if z1 = 4(cos 5π/4 + isin 5π/4) and z2 = 6(cos 7π/6 + isin 7π/6)
https://www.dropbox.com/s/ihht1pn7hsdaiqg/Screen%20Shot%202017-11-21%20at%209.19.31%20AM.png?dl=0
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find z1*z2, if z1 = 4(cos 5π/4 + isin 5π/4) and z2 = 6(cos 7π/6 + isin 7π/6)
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z1 = 4cis(5pi/4)
z2 = 6cis(7pi/6)
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z1*z2 = 4*6cis(5pi/4 + 7pi/6)
= 24cis(29pi/12)
= 24cis(5pi/12)