anonymous
  • anonymous
the terminal side of an angle theta in standard position coincides with the line 2x-y=0 in quadrant 3. find cos theta to the nearest ten-thousandth.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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iYuko
  • iYuko
in quadrant 3 both x and y are negative
iYuko
  • iYuko
since (x, y) lies on 2x - y = 0==> 2x - y = 0 ==> y = 2x
iYuko
  • iYuko
tan(A) = -y/-x = y/x = 2x/x = 2

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iYuko
  • iYuko
A = tan^-1(2)
iYuko
  • iYuko
equals 63.4349
iYuko
  • iYuko
Got it?
anonymous
  • anonymous
i understand a lot better now. thank you for your help, i really appreciate it n.n

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