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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
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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
Thank you so much! helped a lot!
Tip: Don't depend on your calculator

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It /will/ screw you over.
Yeah i have the basic points of the unit circle memorized but thats not one of them
If you can, sketch theta. Remember that sin(k)=y/r, cos(k)=x/r, and tan(k)=y/x
Oh okay, haven't tried that
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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