A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years 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??
 2 years 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??

This Question is Closed

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0Im sorry if i am completely blank

anikay
 2 years ago
Best ResponseYou've already chosen the best response.1this stuff was the worst part of my junior year xD

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0HAHA, dang how old are you? i never took this in HighSchool. my highest was Algebra

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

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0well i tried that x=10 cos pi/5 > 9.99 ? y=10 sin pi/5> .0349

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0okay, 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?

anikay
 2 years ago
Best ResponseYou've already chosen the best response.1yes, should it be degress?

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0lol 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.

anikay
 2 years ago
Best ResponseYou've already chosen the best response.1i got a test makeup friday and a test tomorrow

anikay
 2 years ago
Best ResponseYou've already chosen the best response.1Calc, is much easier imo

lilsis76
 2 years ago
Best ResponseYou've already chosen the best response.0oh 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

anikay
 2 years ago
Best ResponseYou've already chosen the best response.1if you ever need calc help, I'm an @ away. night

phi
 2 years ago
Best 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)

anikay
 2 years ago
Best ResponseYou've already chosen the best response.1oh right, because theta always gives a polar answer, thanks :D
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.