Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

mitchelsewbaran

  • 3 years ago

Which of the following is an exact value of cos 15° ?

  • This Question is Closed
  1. mitchelsewbaran
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  2. Azteck
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    \[\large \cos15=\cos(60-45)\] Double angle results. \[\large\cos(60-45)=\cos60\cos45+\sin60\sin45\]

  3. Azteck
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Now find out for cos15 after I gave you a headstart

  4. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy