Ask a Question
or
Create a Poll
  1. Home /
  2. Questions /
  3. Science
  4. / Mathematics
  5. / Mathematics Education

by The Music Roob Ninja on December 16th, 2010

The Music Roob Ninja

Question

Help answer this question below.

Prove using sinx=1/2i(e^(ix)-e^(-ix) and cosx=1/2(e^(ix)+e^(-ix)) that sinA+sinB=2sin((A+B)/2)cos((A+B)/2). This is pretty urgent, thanks!

  • Like
  • Report
Share:
Other

Answers. Showing one answer.

  • by Grandma Roses - my avatar is my real dog on December 17th, 2010

    Grandma Roses - my avatar is my real dog

    Do your own homework.
    And pay attention in class next time.

    Comments

    • I spent three hours on this question, ended up handing the assignment in without it. I only need 40% though. I just really want to know what the proof was.

      The Music Roob Ninja

      by The Music Roob Ninja on December 17th, 2010

    • Most of the people who tell you to do your own homework can't do the problem themselves.

      Besides, I consider it a legitimate question. Considering how many 2+2 = 4 questions we get on here, its nice to see something a bit more eh...engaging.

      WarHorseLeBron

      by WarHorseLeBron on December 17th, 2010

    2 comments | Post one | Permalink

Want to attach an image to your answer? Click here.

Did this answer your question? If not, then ask a new question or create a poll.

More Questions. Additional questions in this category.

You're reading Prove using sinx=1/2i(e^(ix)-e^(-ix) and cosx=1/2(e^(ix)+e^(-ix)) that sinA+sinB=2sin((A+B)/2)cos((A+B)/2). This is pretty urgent, thanks!

Follow us on Facebook!

Related Ads

Related Questions

Professionally Researched

Answerbag

a Demand Media company