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anonymous
 one year ago
Help! Use De Moivre's Theorem to compute the following: [3(cos(27)) + isin (27)]^5
anonymous
 one year ago
Help! Use De Moivre's Theorem to compute the following: [3(cos(27)) + isin (27)]^5

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(1/(3^5))((cos(27*5)+sin(27*5))

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Moivre s theorem is easy ; you have to keep the formula in mind !!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am new to De Moivre's theorum, okay that equation you said, i continue to solve that and get the answer?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you have just to replace 27*5 by 135

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0furthermore, you have to use these identities: \[\begin{gathered} \cos \left( {  135} \right) = \cos \left( {135} \right) \hfill \\ \sin \left( {  135} \right) =  \sin \left( {135} \right) \hfill \\ \end{gathered} \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I continued to solve and got \[(122 \sqrt(2))/243\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Michele_Laino furthermore he can also use cos(135)=sin(45) and sin(135)=cos(45)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0absolutly noot coorrect !

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay I must've did something wrong :/

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you have to find a complex number (a+ib)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay do i plug numbers from the equation into (a + ib)?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0try ! and show me what u get

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay Im guessing i is standing for the imaginary number, hmm (27 + i5) ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0O.O how did u get thiis !

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you have to comput the value of 1/3^5cos(135) and plug it into a

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then compute the value of 1/3^5sin(135) and plug it into b

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay for the value should it be a decimal or a fraction?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0take a look ur mail box
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