anonymous
  • anonymous
I need to find z1z2... z1=1+2i, z2=-2-3i I need to use arctan...to find theta..how to do it?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
it would be tons easier just to multiply
anonymous
  • anonymous
can you show me how to get the arctan?
blockcolder
  • blockcolder
If you're asked to convert to polar form before solving and then bring the answer back to rectangular form, then you don't really need to evaluate the arctan when you get it.

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anonymous
  • anonymous
but we are required to get arctan though, and I am converting it from a complex number
blockcolder
  • blockcolder
Then use a calculator.

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