Find the measure of angle BAC
Trying to attach file for the problem
Please someone help.
This is easier than you think.
In a circle, the measure of an arc is equal to the measure of its central angle. (A central angle is and angle whose vertex is the center of the circle.) |dw:1400469268398:dw|
You also need this: In a circle, an inscribed angle has half the measure of its intercepted arc. |dw:1400469420606:dw|
Now look at your case. A central angle of 76 deg intercepts an arc of the same measure, so arc BC has a measure of ______. Inscribed angle BAC has half the measure of its intercepted arc BC. m<BAC is ____.
Would bc be 76*2=152?
Arc BC has a measure equal to its central angle, <BOC, so arc BC has a measure of 76 deg. Angle BAC has a measure that is half the measure of its intercepted arc. That means that m<BAC = 1/2 * 76 = 38 deg. You multiplied by 2 instead of dividing by 2.
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