Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
PreCalc & Trig, picture below, please show your work..
Really frustrated with this homework. :/
 one year ago
 one year ago
PreCalc & Trig, picture below, please show your work.. Really frustrated with this homework. :/
 one year ago
 one year ago

This Question is Closed

ghass1978Best ResponseYou've already chosen the best response.0
use sinx=2sin(x/2)cos(x/2) then factorize
 one year ago

AtkinsohaBest ResponseYou've already chosen the best response.0
Maybe I should tell you this: I haven't been in class for over a week. I don't know any of this stuff.. so be as simple and thorough as you can, thanks.
 one year ago

getuselBest ResponseYou've already chosen the best response.1
\[\cos(\frac{ x }{ 2 })sinx=0\] use the identity sin2x=2sinxcosx \[\cos(x/2)2\sin(x/2)\cos(x/2)=0\] \[\cos(x/2)(1\sin(x/2))=0\] cos(x/2)=0 or 1sin(x/2)=0 \[\cos(x/2)=0 => x/2=\pi/2 \] \[x=\pi\] \[1\sin(\frac{ x }{ 2 })=0\]
 one year ago

getuselBest ResponseYou've already chosen the best response.1
\[\sin(\frac{ x }{ 2 })=1 => \frac{ x }{ 2 }=\pi/2\] \[x=\pi\]
 one year ago

getuselBest ResponseYou've already chosen the best response.1
the solution is \[\pi\]
 one year ago
See more questions >>>
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.