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Itel
 2 years ago
Express the complex number in trigonometric form.
4
Itel
 2 years ago
Express the complex number in trigonometric form. 4

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frx
 2 years ago
Best ResponseYou've already chosen the best response.2So, do you know how to find the the angle?

frx
 2 years ago
Best ResponseYou've already chosen the best response.2Try to think of the unitcircle

frx
 2 years ago
Best ResponseYou've already chosen the best response.24 is simply just a scaledup 1 so that means that the angle is what?

frx
 2 years ago
Best ResponseYou've already chosen the best response.2Or pi since you're looking for the polarform

Itel
 2 years ago
Best ResponseYou've already chosen the best response.0Thanks. These are the possible answers: 4(cos 270° + i sin 270°) 4(cos 90° + i sin 90°) 4(cos 0° + i sin 0°) 4(cos 180° + i sin 180°) So how do I find out which one of those is the answer if it is pi or 180 degrees? thanks again

frx
 2 years ago
Best ResponseYou've already chosen the best response.2\[z=\sqrt{4^{2}}=4\] \[\arg(z)= \pi \] \[4(\cos \pi+isin \pi)\]

frx
 2 years ago
Best ResponseYou've already chosen the best response.2So since your alternatives are in degrees and not radians you know it's 180 degrees.

frx
 2 years ago
Best ResponseYou've already chosen the best response.2So it's the last one of your options

Itel
 2 years ago
Best ResponseYou've already chosen the best response.0Oh i see what you did. Thank you so much man. I really appreciate your help. Very thorough explanation.

frx
 2 years ago
Best ResponseYou've already chosen the best response.2If you have any questions just send a pm
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