Find the point on the terminal side of θ=-3pi/4 that has an x coordinate of -1.

Question

galleara · Answer

it would be $$\pi, 0$$

anonymous · Answer

how did you find that?

galleara · Answer

http://prec.alcul.us/wp-content/uploads/alg2_radians.gif you might want to print this off for future reference I have like 10 of the same one haha

anonymous · Answer

I still don't get what you did. can you please explain?

galleara · Answer

well when you look at this particular circle, you see how everything is in an ordered pair?

anonymous · Answer

yeah

galleara · Answer

look for 180 degrees on the circle and tell me which ordered pair it gives you

anonymous · Answer

(-1,0)

galleara · Answer

and do you see what 180 degrees is equal to? (look between the ordered pair and 180 degrees)

anonymous · Answer

pi

galleara · Answer

yep :)

anonymous · Answer

ok i see what u did there. :) but how did you know that it'd be 180 degrees?

anonymous · Answer

nevermind i see because there's an x coordinate of -1 right?

galleara · Answer

because on the radian circle, 90 degrees is pi/2
180 degrees is pi, 270 degrees is 3pi/2, and 360 degrees is 2pi

galleara · Answer

and yes that is correct :)

anonymous · Answer

wait for the first problem what is the final answer?

galleara · Answer

it should just be pi

anonymous · Answer

i still just don't get how you found that point :/

anonymous · Answer

can you explain it step by step please?

galleara · Answer

sure :)

anonymous · Answer

thanks

galleara · Answer

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