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convert the given polar coordinates to rectangular coordinates.(10, pi/5)
i know
x=rcosQ
y=rsinQ
i guess i plug in 10 cos(pi/5)? right??
 one year ago
 one year ago
convert the given polar coordinates to rectangular coordinates.(10, pi/5) i know x=rcosQ y=rsinQ i guess i plug in 10 cos(pi/5)? right??
 one year ago
 one year ago

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lilsis76Best ResponseYou've already chosen the best response.0
Im sorry if i am completely blank
 one year ago

anikayBest ResponseYou've already chosen the best response.1
this stuff was the worst part of my junior year xD
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
HAHA, dang how old are you? i never took this in HighSchool. my highest was Algebra
 one year ago

anikayBest ResponseYou've already chosen the best response.1
I'm 17. and yes, to get x you plug in \[10\cos (\pi/5)\] and for y \[10\sin (\pi/5)\]
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
well i tried that x=10 cos pi/5 > 9.99 ? y=10 sin pi/5> .0349
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
okay, i have a question tho now. i got this question wrong and the instructor circled my pi/5 and wrote radians. isnt it in radians?
 one year ago

anikayBest ResponseYou've already chosen the best response.1
yes, should it be degress?
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
lol it doesnt say, but i dont know why she circledit lol. THANK YOU OH SO VERY MUCH!!!!! i really appreciate it. UGH i gotta do better on this test make up.
 one year ago

anikayBest ResponseYou've already chosen the best response.1
i got a test makeup friday and a test tomorrow
 one year ago

anikayBest ResponseYou've already chosen the best response.1
Calc, is much easier imo
 one year ago

lilsis76Best ResponseYou've already chosen the best response.0
oh boy, :/ i would def. fail that. lol i hope so i have to get all the way to calc 2 i think. Well im logging off. thank you very much. Have a goodnite
 one year ago

anikayBest ResponseYou've already chosen the best response.1
if you ever need calc help, I'm an @ away. night
 one year ago

phiBest ResponseYou've already chosen the best response.0
*** well i tried that x=10 cos pi/5 > 9.99 ? y=10 sin pi/5> .0349 *** right idea, but you had your calculator in "degree mode" rather than "radian mode" so you are getting the wrong answer the safest way to do this is change pi/5 radians to degrees you do this by multiplying by 180/pi \[ \frac{\cancel{\pi}}{5} \text{ rads} \cdot \frac{180}{\cancel{\pi}}= \frac{180}{5}= 36º \] now, with your calculator in "DEGREE MODE" do 10*cos(36)= 8.08 10*sin(36)= 5.88 your rectangular coordinates are (8.08, 5.88)
 one year ago

anikayBest ResponseYou've already chosen the best response.1
oh right, because theta always gives a polar answer, thanks :D
 one year ago
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