anonymous
  • anonymous
what is the sine of -390 in fraction form and how would i find out how to do this on my TI-84 graphing calculator?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Make sure the mode is set to degrees and not radians. Enter sin(-390 to find the decimal form. Then, press math and select >Frac. Press enter and you have your fraction
anonymous
  • anonymous
Thank you so much! helped a lot!
anonymous
  • anonymous
Tip: Don't depend on your calculator

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anonymous
  • anonymous
It /will/ screw you over.
anonymous
  • anonymous
Yeah i have the basic points of the unit circle memorized but thats not one of them
anonymous
  • anonymous
If you can, sketch theta. Remember that sin(k)=y/r, cos(k)=x/r, and tan(k)=y/x
anonymous
  • anonymous
Oh okay, haven't tried that
anonymous
  • anonymous
just to make sure I'm correct its (cos,sin) for how the ordered pairs on a nit circle are ordered right?

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