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Mathematics 22 Online
OpenStudy (anonymous):

check my answer? SOHCAHTOA

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

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?

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

OpenStudy (anonymous):

thanks!

OpenStudy (rational):

thats it! yw :P

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