A community for students.
Here's the question you clicked on:
 0 viewing
pottersheep
 2 years ago
Grade 12 Trig Identities trouble....help please...
I'm not sure how to prove that
((sin2x/(1+cos2x)) * (cosx)/(1+cosx) = tan(x/2)
pottersheep
 2 years ago
Grade 12 Trig Identities trouble....help please... I'm not sure how to prove that ((sin2x/(1+cos2x)) * (cosx)/(1+cosx) = tan(x/2)

This Question is Closed

sirm3d
 2 years ago
Best ResponseYou've already chosen the best response.1try the double angle formulas \[\large \sin 2x=2\sin x \cos x\]and\[\large \cos 2x = 2\cos^2 x 1\]

pottersheep
 2 years ago
Best ResponseYou've already chosen the best response.0Yep that's what I have tried out...I keep getting stuck though

pottersheep
 2 years ago
Best ResponseYou've already chosen the best response.0because one side is tan(x/2)

chaguanas
 2 years ago
Best ResponseYou've already chosen the best response.0I've tried it and find what I think is the answer. See if you can find it; I used this page http://www.sosmath.com/trig/douangl/douangl.html

pottersheep
 2 years ago
Best ResponseYou've already chosen the best response.0Thank you very much I will go take a look
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.