Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
brookieismyname
Group Title
The circle shown below has AB and BC as its tangents.
If the measure of arc AC is 130°, what is the measure of angle ABC?
80°
65°
70°
75°
 2 years ago
 2 years ago
brookieismyname Group Title
The circle shown below has AB and BC as its tangents. If the measure of arc AC is 130°, what is the measure of angle ABC? 80° 65° 70° 75°
 2 years ago
 2 years ago

This Question is Closed

integralsabiti Group TitleBest ResponseYou've already chosen the best response.2
dw:1335032976626:dw
 2 years ago

brookieismyname Group TitleBest ResponseYou've already chosen the best response.1
dw:1335033326418:dw
 2 years ago

imagreencat Group TitleBest ResponseYou've already chosen the best response.0
Arc AC is the part of the circle connecting A and C. It lies on the circumference of the circle.
 2 years ago

integralsabiti Group TitleBest ResponseYou've already chosen the best response.2
dw:1335033299166:dw
 2 years ago

brookieismyname Group TitleBest ResponseYou've already chosen the best response.1
What does that say?
 2 years ago

brookieismyname Group TitleBest ResponseYou've already chosen the best response.1
I need to know how to find the measure of abc
 2 years ago

imagreencat Group TitleBest ResponseYou've already chosen the best response.0
The angle is actually equal to the (far archnear arc)/2. The far arc is the one farther from the angle unknown. Since near arc = 130, far arc = 230. Therefore, the unknown angle is (230130)(1/2) = (100/2) = 50 deg.
 2 years ago

brookieismyname Group TitleBest ResponseYou've already chosen the best response.1
Thats not one of the options though
 2 years ago

integralsabiti Group TitleBest ResponseYou've already chosen the best response.2
@eigenschmeigen take a look at this pls.
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
yeah i got 50 ill show:
 2 years ago

smr_kml Group TitleBest ResponseYou've already chosen the best response.0
There is no right answer
 2 years ago

smr_kml Group TitleBest ResponseYou've already chosen the best response.0
the answer is 50
 2 years ago

estudier Group TitleBest ResponseYou've already chosen the best response.0
I aslo get 50 (draw line from centre to B, Pythagorus)
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
dw:1335033823663:dw
 2 years ago

integralsabiti Group TitleBest ResponseYou've already chosen the best response.2
@eigenschmeigen my man! love ur answers :D
 2 years ago

smr_kml Group TitleBest ResponseYou've already chosen the best response.0
dw:1335033908901:dw
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
dw:1335033879923:dw break it into two triangles, and we know triangles have interior angles that add up to 180 so that quadrilateral has 360 as the sum of its interior angles so \[130 + 90 + 90 +\alpha = 360 \] so\[\alpha = 360  90 90 130 = 50\]
 2 years ago

brookieismyname Group TitleBest ResponseYou've already chosen the best response.1
The only problem is fifty's not an option
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
aw thanks @integralsabiti :D means a lot to me
 2 years ago

integralsabiti Group TitleBest ResponseYou've already chosen the best response.2
oh yeaaa :D that is the best part!
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
hmm 50 isnt an answer is it
 2 years ago

integralsabiti Group TitleBest ResponseYou've already chosen the best response.2
if @eigenschmeigen says that the answer is 50 then u should make a new option :D option E.
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
haha
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
i'll check through the problem see if we missed something
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
i cant see any errors :/
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
i checked it using some geometry software, its 50 for sure
 2 years ago

integralsabiti Group TitleBest ResponseYou've already chosen the best response.2
Abselutely agree.
 2 years ago

brookieismyname Group TitleBest ResponseYou've already chosen the best response.1
The answer was 65 degrees, @eigenschmeigen @integralsabiti
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
im sorry, but either the answers are wrong or have written the question wrong i say this in the nicest possible way of course :) where was this question from?
 2 years ago

brookieismyname Group TitleBest ResponseYou've already chosen the best response.1
A test
 2 years ago

eigenschmeigen Group TitleBest ResponseYou've already chosen the best response.1
and you're sure its 130?
 2 years ago

brookieismyname Group TitleBest ResponseYou've already chosen the best response.1
I got it right, I guessed the right answer. It was 65
 2 years ago
See more questions >>>
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
 Engagement 19 Mad Hatter
 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.