Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
← 55 members online
 0 viewing

This Question is Closed

hartnn Group TitleBest ResponseYou've already chosen the best response.1
without calcy ?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
first can u find sin 18 without calcy ?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
pretty standard
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
let x= 18 5x = 90 3x = 902x now take sin on both sides.
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
sin 3x = sin(902x) sin 3x = cos 2x
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
now put the formula fo sin 3x and cos 2x in terms of powers of sin x only.
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
u get a cubic in sin x. solve it.
 one year ago

DLS Group TitleBest ResponseYou've already chosen the best response.1
wait,theres a formula for sin3x? :P
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
absolutely.
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
sin 3x = 3sin x  4 sin^3 x
 one year ago

DLS Group TitleBest ResponseYou've already chosen the best response.1
okay yes ! i remember :P
 one year ago

DLS Group TitleBest ResponseYou've already chosen the best response.1
okay I guess i can do it now
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
from sin 18, u get cos 36 from the formula of cos 2x in terms of sin x
 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.