anonymous
  • anonymous
The figure below shows a triangular wooden frame ABC. The side AD of the frame has rotted and needs to be replaced:
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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anonymous
  • anonymous
What is the length of the wood that is needed to replace AD?
anonymous
  • anonymous
@welshfella

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welshfella
  • welshfella
use trigonometry take the big triangle tan 45 = AB/BC = AB/14 solve for AB
welshfella
  • welshfella
then find the length of DB in the bottom triangle tan 30 = DB/14 solve for DB
welshfella
  • welshfella
finally AD = AB-DB
anonymous
  • anonymous
How do I find out what AB and DB are tho?
welshfella
  • welshfella
tan45 = AB / 14 cross multiply:- AB = 14* tan45 grab your calculator and work it out
anonymous
  • anonymous
Thank you
welshfella
  • welshfella
yw

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