Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Chiomatn93

  • 3 years ago

find the area of the triangle whose sides have the given lengths. a=1, b=2, c=2

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

    use herons formula, or find an angle with the law of cosine

  2. ipm1988
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ Chiomatn use the method i gave you it is valid for all

  3. Chiomatn93
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is s=2.5?

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

    @Chiomatn93 , I just told you the answer few minutes back. The heron's formula

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

    |dw:1336932257283:dw| c^2 = a^2 + b^2 -2ab cos(C) c^2-a^2-b^2 ------------ = cos(C) -2ab c^2-a^2-b^2 cos^-1 (------------) = C -2ab 2^2 sinC -------- = area 2

  6. Chiomatn93
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    that wasnt the answer... u just gave me the formula

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

    @Chiomatn93 , I am not here to give answers :(

  8. shivam_bhalla
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    If you want some help , I can help you

  9. Chiomatn93
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    all i want is the steps and answer.. i already know the formula.. is s=2.5?

  10. shivam_bhalla
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

  11. ipm1988
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ chiomatn93 be confident in what you are you would make mistakes I also did just keep on trying

  12. shivam_bhalla
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Chiomatn93, you need a calculator, not us :P

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

    Let \[s =\frac {a+b+c}{2}=\frac 5 2\\ Area= \sqrt{ s(s-a)(s-b)(s-c)}=\frac {\sqrt{15}}{4} \]

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

    if never been fond of the heron formula :)

  15. Chiomatn93
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    im getting decimals

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

    \[ \frac{\sqrt{15}}{4}\approx 0.968246 \]

  17. 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