A community for students.
Here's the question you clicked on:
 0 viewing
goongmax
 2 years ago
arccos(cos(94pi/59))
goongmax
 2 years ago
arccos(cos(94pi/59))

This Question is Closed

micahwood50
 2 years ago
Best ResponseYou've already chosen the best response.1HINT: \[\cos^{1} (\cos x) = x\]

goongmax
 2 years ago
Best ResponseYou've already chosen the best response.0arccos(cos(94pi/59)) = 94pi/59

goongmax
 2 years ago
Best ResponseYou've already chosen the best response.094pi/59 is in the 4th quad. so... 94pi/59 pi = 35/59 pi

TransendentialPI
 2 years ago
Best ResponseYou've already chosen the best response.1We know the range of the arc cosine function is limited to [0,pi], right? We know that 90pi/59 is pretty close to 90pi/60 or 3pi/2. The cos(3pi/2) is close to 0 The arccos(0) is pi/2 The reference angle for the 90pi/59 would be in quad 4 and measure 28/59 pi. SO I'm thiniking the answer to the problem would be 28pi/59dw:1351301172847:dw

TransendentialPI
 2 years ago
Best ResponseYou've already chosen the best response.1Glad to see I was thinking about that correctly.

zepdrix
 2 years ago
Best ResponseYou've already chosen the best response.2Oh sorry trans.. you were typing really long :C wasn't sure if you were going to paste anything. Didn't mean to step on yer toes there XD

goongmax
 2 years ago
Best ResponseYou've already chosen the best response.0OMG wrong lol. its 2pi  94/59pi
Ask your own question
Sign UpFind 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.