SOLUTION: Write the following complex nr in polar form - No calculator to be used: 1. 7^(1/2)+21^(1/2).I 2. -5+12i write complex numbers in rectangular form and sketch representation in

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Write the following complex nr in polar form - No calculator to be used: 1. 7^(1/2)+21^(1/2).I 2. -5+12i write complex numbers in rectangular form and sketch representation in      Log On


   



Question 1040090: Write the following complex nr in polar form - No calculator to be used:
1. 7^(1/2)+21^(1/2).I
2. -5+12i
write complex numbers in rectangular form and sketch representation in Argand diagram:
1. 4 cis 120 degrees
2. 9 cis (3pi/2)

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


2. The modulus is just the application of Pythagoras to the real part and the real coefficient of the imaginary part. . But without a calculator, the best you can do for the argument is

John

My calculator said it, I believe it, that settles it