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Multiply. √3/2cis(2π/9)·√6/4cis(3π/2). Which is the answer?

 

a. 2√3/8cis(31π/18)

b. 3√2/8cis(π/3)

c. 3√2/8cis(31π/18)

d. 2√3/8cis(π/3)

 

I got answer a but im not sure if it's correct 

 Aug 25, 2021
 #1
avatar+114536 
+1

What answer did you get?

Or better still, show me your working and I will tell you if it is correct.

 Aug 25, 2021
 #2
avatar+68 
+1

i got 2sqrt2/8 cis 31pi/18

 Aug 25, 2021
 #3
avatar+114536 
+1

i got    3sqrt2/8 cis 31pi/18

 

check

\(\frac{\sqrt3}{2}*\frac{\sqrt6}{4}=\frac{\sqrt{2*9}}{8}=\frac{3\sqrt2}{8}\)

Melody  Aug 25, 2021

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