Cartesian , Polar and Exponential Form . Help needed thanks .

  • Thread starter mikecrush
  • Start date
  • #1
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Express -2(cos pai/4+i sin pai/4 ) in Cartesian , Polar and Exponential form ?

how can i convert this : - 2 (cos pai / 4 + i sin pai / 4 ) to Cartesian , Polar and Exponential form ?

Thank you very much
 

Answers and Replies

  • #2
lanedance
Homework Helper
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hi mikecrush - any ideas on how to try & solve it?

worth starting by having a look at the definition/properties of complex exponentials
 
  • #3
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So the number is [itex]-2(\cos \pi/4 + i \sin \pi/4)[/itex].

Do you know what the definitions of Cartesian, Polar, and Exponential forms are?

You may need the following equations:

[tex]\begin{array}{c}x=r\cos \theta \\
y=r \sin \theta \\
x^2 + y^2 = r^2 \\
\tan \theta = \frac{y}{x}\\
e^{i \theta} = \cos \theta + i \sin \theta
\end{array}[/tex]​

--Elucidus
 

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