+0  
 
0
404
2
avatar

7(cos330+ i sin330)

Guest Dec 11, 2014

Best Answer 

 #2
avatar+92781 
+10

or

 

$$7(cos330+ i sin330)\; = \;7(cos(-\pi/6)+isin(-\pi/6)) = 7e^{-\pi i/6}$$

Melody  Dec 11, 2014
 #1
avatar+87301 
+5

7(cos330+ i sin330) =

7( √3/2 - 1/2i) =

[ 7√3 - 7i ] / 2 =

(7/2)√3 - (7/2) i

 

CPhill  Dec 11, 2014
 #2
avatar+92781 
+10
Best Answer

or

 

$$7(cos330+ i sin330)\; = \;7(cos(-\pi/6)+isin(-\pi/6)) = 7e^{-\pi i/6}$$

Melody  Dec 11, 2014

13 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.