Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Cutiepo0

  • 4 years ago

How do you find the area of an acute triangle when you're only given the side lengths????

  • This Question is Closed
  1. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    one way is; you can use the law of cosines to find an angle and use that angle in the side*side*sin(angle)/2 formula

  2. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    the other is to use herons formula

  3. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    1 Attachment
  4. Cutiepo0
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so the area = \[a timesb \times \sin \] of the angle contained between a and b?

  5. Cutiepo0
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    then, divided by two

  6. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    thats right; so if you can find the angle between two sides, you can find the area

  7. Cutiepo0
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay! Thanks :)

  8. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    in my picture; base = b; height = a sin(angle) which fits into the normal Area = b*h/2 that you are familiar with

  9. 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