karatechopper
  • karatechopper
If ABJ=28, ABC "congruent to" DBJ, find JBC.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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karatechopper
  • karatechopper
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anonymous
  • anonymous
So we know: DBJ + ABJ = 90 DBJ = ABC DBC + ABC = 90 JBC + DBC + ABJ = 90
anonymous
  • anonymous
And last but not least: ABJ = 28

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anonymous
  • anonymous
Do you know how to solve a system of equations?
anonymous
  • anonymous
Actually it doesn't matter, we can solve this one angle at a time.
anonymous
  • anonymous
First you need to find DBJ... what is DBJ?
karatechopper
  • karatechopper
I got 62 for DBJ
anonymous
  • anonymous
Which is also ABC
karatechopper
  • karatechopper
Correct
anonymous
  • anonymous
Now we need to find DBC
karatechopper
  • karatechopper
Well i know that 62=JBC+CBD now.. So then that also means ABC=JBC+CBD or! DBJ= JBC+CBD
karatechopper
  • karatechopper
Soo..this is where i get stuck at
anonymous
  • anonymous
DBC + ABC = 90
anonymous
  • anonymous
We use this fact to find CBD
anonymous
  • anonymous
DBC and CBD are the same

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