anonymous
  • anonymous
Help! Find y in these 30 - 60 - 90 triangles. y= ? http://tinypic.com/r/j9ugj6/5
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
30 - 60 - 90 (Degree)
ivettef365
  • ivettef365
use cos(30) = 7/ y
anonymous
  • anonymous
how do i do that??

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ivettef365
  • ivettef365
therefore cos (30)/y = 7 therefore y = 7 / cos(30)
ivettef365
  • ivettef365
Use calculator
anonymous
  • anonymous
the answer has to be _ _ _ _ sqr. _
anonymous
  • anonymous
so 4538 sqr. 3?
anonymous
  • anonymous
is that the right answer??
ivettef365
  • ivettef365
no, what are your choices
anonymous
  • anonymous
they don't give choices
ivettef365
  • ivettef365
How you know is a square root
anonymous
  • anonymous
because they give me the option to plug in the numbers, for the answers and there is a square root
ivettef365
  • ivettef365
I know that y = 8.08 and x = 4.04
ivettef365
  • ivettef365
try square root of 65

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