Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Dallasb22
Group Title
Given: DR tangent to Circle O.
If (measure of)DB = 150°, then (angle)A = ?degrees.
 one year ago
 one year ago
Dallasb22 Group Title
Given: DR tangent to Circle O. If (measure of)DB = 150°, then (angle)A = ?degrees.
 one year ago
 one year ago

This Question is Closed

Dallasb22 Group TitleBest ResponseYou've already chosen the best response.0
@CliffSedge
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
More of these shenanigans, eh?
 one year ago

Dallasb22 Group TitleBest ResponseYou've already chosen the best response.0
Hehe, yup.
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
Which angle is 150º?
 one year ago

Dallasb22 Group TitleBest ResponseYou've already chosen the best response.0
Arc DB is 150 degrees
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
Oh that's for the arc, ok. then that means that angle BCD is half of that because it is an inscribed angle cutting the same arc.
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
(I'm assuming from the picture that you mean arc BAD and not arc BCD, since it could go either way around the circle.)
 one year ago

Dallasb22 Group TitleBest ResponseYou've already chosen the best response.0
Yes sorry about that, that's how they put it in on the sheet.
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
I think the easiest way to find A is the same property: inscribed angles are half of the arc they cut, so if arc BAD is 150, then arc BCD is the other part of the circle (the whole thing is 360º remember).
 one year ago

Dallasb22 Group TitleBest ResponseYou've already chosen the best response.0
Yes arc BCD is 210 So angle A is: 105 degrees
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
Exactly.
 one year 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.