anonymous
  • anonymous
Given sin x =-1/2 with x in quadrant 3 and tan y =4/3 with y in quadrant 1, find the exact value of sin(x-y).
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
incomplete info
anonymous
  • anonymous
thats all the question gives me
anonymous
  • anonymous
I'm stumped. I don't know if x and y are sides of triangle or angles

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anonymous
  • anonymous
\[actually x=\alpha and y=\beta\]
anonymous
  • anonymous
can't figure out what you just wrote
anonymous
  • anonymous
\[x=\alpha \] and \[y=\beta\]
anonymous
  • anonymous
OK, choice of variables made the question confusing. I got it now. Got to go to class will attempt later.
anonymous
  • anonymous
okay appreciate it!
anonymous
  • anonymous
Recall sin (A - B) = Sin A cos B - cos A sin B Use sin A= -1/2 in 3rd quadrant to find cos A Use tan B =4/3 in 1st to find sin of B, cos B Use exact values (no calculator, keep square roots etc) to find above

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