A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

briana.img

  • one year ago

FInd the measure of angle C

  • This Question is Closed
  1. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I've tried it twice and the second time i got 12.51400

  2. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I have fone \[a^2=13^2+17^2-2(13)(17)\cos47\]

  3. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    done*

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    For this one, use the sine law. Do you know it?

  5. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ospreytriple yeah hold on let me try it out

  6. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ospreytriple 10sinB=17sin47???

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Shouldn't it be 13, not 10?

  8. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ospreytriple oh yeah sorry about that 13sinb=17sin4

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    OK. The way I'm used to using the sine law is as follows:\[\frac{ \sin \left( A \right) }{ a } =\frac{ \sin \left( B \right) }{ b }\]. Is this the way you have it?

  10. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ospreytriple yeah i did that but you have to rearange to the way i had it and then do s\[sinb=\frac{ 17\sin47 }{ 13 }\]

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I think there's an error in the rearranging. You have \[\frac{ \sin \left( B \right) }{ b }=\frac{ \sin \left( C \right) }{ c }\]To isolate sin(C) you would multiply both sides of the equation by c, giving\[\frac{ c \sin \left( B \right) }{ b }=\sin \left( C \right)\]Make sense?

  12. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ospreytriple yeah

  13. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    OK. So solve\[\sin \left( C \right)=\frac{ 17 \sin \left( 47 \right) }{ 13 }\]

  14. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ospreytriple calculator got 1.27436702

  15. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    What do you get for sin(47)?

  16. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ospreytriple 0.7313

  17. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Good. Multiply that number by 17 and divide that answer by 13. What do you get?

  18. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ospreytriple 0.956315

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Excellent. Now evaluate \[C=\sin ^{-1}\left( 0.956315 \right)\]

  20. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ospreytriple calculator is getting 73.00200763 but doesnt seem right at all

  21. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That's what I get. Is that one of your choices?

  22. briana.img
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ospreytriple oh nvm it is i was looking at the wrong problem lmao thank you!!

  23. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yayyy! Just remember to be very careful how you use your calculator.

  24. 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

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
  • 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.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.