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ErinWeeks
 2 years ago
Find mBAC in circle O. (The figure is not drawn to scale.)
ErinWeeks
 2 years ago
Find mBAC in circle O. (The figure is not drawn to scale.)

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ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0A. 170 B. 95 C. 47.5 D. 42.5

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0no i go to James Madison

arandomguy
 2 years ago
Best ResponseYou've already chosen the best response.0i was on the unit 6 test and was wondering if someone could help me with some problems

SmoothMath
 2 years ago
Best ResponseYou've already chosen the best response.0Oh, hey. Real simple. If you can figure out the measure of the arc that the inscribed angle subtends, then the angle will simply be: \[\Large \text{inscribed angle} = \frac{\text{measure of arc subtended}}{2}\]

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0i dont know how to figure that out the arc _

SmoothMath
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1357873734885:dw

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0so it would be 85 .. then what do you do? can you show me

SmoothMath
 2 years ago
Best ResponseYou've already chosen the best response.0naw gurl. it aint even.

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0would it be 90? 95? I dont know lol

SmoothMath
 2 years ago
Best ResponseYou've already chosen the best response.0I'm sorry. The whole guessing business just kills me. Stop guessing, stop begging for answers, and show some effort.

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.0i am i dont know how to do this, Im trying ..

SmoothMath
 2 years ago
Best ResponseYou've already chosen the best response.0All of the facts you need: Two angles that form a straight line must add up to 180 degrees. An arc has the same measure as a central angle that includes it. An inscribed angle is half of the measure of the arc it includes.

mathmate
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1357910861134:dw @ErinWeeks We should never guess in math, or else you will always have 25% or thereabouts for your grades! :( The above diagram shows the relation between the angles subtended by the same chord AC, at the circumference B or at the centre O. If you join OB, then OA,OB,OC are all equal to the radius. Thus triangl OAB is isosceles, therefore mBAO=mABO. Similarly mBCO=mCBO. But mABO+mCBO=mAOC (exterior angles), which means finally \( mAOC=2 * mABC.\) Hope this helps. Note: this is similar to the question I answered previously. Hope that this more detailed explanation helps you work on other problems. Please, do NOT guess your answers if you want a good grade. Understanding is faster than guessing.
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