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Mathematics
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OpenStudy (anonymous):
check my answer? SOHCAHTOA
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OpenStudy (anonymous):
OpenStudy (rational):
Correct! how did u get that
OpenStudy (anonymous):
Tan is Opp/adj. i just get my opp and adj sides mixed up sometimes! thanks.
OpenStudy (rational):
good job!
OpenStudy (anonymous):
could you possibly explain this really quick? i thought i understood these but cant figure out the answer @rational
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OpenStudy (rational):
remember below about unit circle :
x coordinate = cos(t)
y coordinate = sin(t)
OpenStudy (rational):
and think of coordinate grid
in which quadrants is "x" positive ?
OpenStudy (anonymous):
quadrant 1?
OpenStudy (anonymous):
what about tan then? @rational since it is asking for t>0
OpenStudy (anonymous):
ah is the answer quadrant 1?
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OpenStudy (rational):
Yes, tan is positive in I quadrant and III quadrant
so..
OpenStudy (anonymous):
wait does that mean it could be both?
OpenStudy (anonymous):
cos is only positive in quadrant 1 isnt it?
OpenStudy (rational):
cost is positive in I and IV quadrants
tant is positive in I and III quadrant
so both cost and tant are positive in _____ quadrant ?
OpenStudy (anonymous):
I quadrant
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OpenStudy (anonymous):
thanks!
OpenStudy (rational):
thats it! yw :P
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