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Find the trigonometric form of 

4 − i

 Dec 6, 2018
edited by Ruublrr  Dec 7, 2018
 #1
avatar+18138 
+2

4 + (-1) i

 

First find r

=  sqrt(4^2 +(-1)^2) = sqrt 17

 

find theta       tan theta = -1/4  theta = ~346 degrees

 

sqrt17 (cos 346 - i sin 346)

 Dec 7, 2018
 #2
avatar+306 
+1

How do you convert 346 degrees to radians?

Ruublrr  Dec 7, 2018
edited by Ruublrr  Dec 7, 2018
 #3
avatar+18138 
+2

346 x pi/180 =  6.04 Radians

ElectricPavlov  Dec 7, 2018

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