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The figure below shows a triangle with vertices A and B on a circle and vertex C outside it. Side AC is tangent to the circle. Side BC is a secant intersecting the circle at point X.
What is the measure of angle ACB?
6, 12, 24 or 32 degrees
 one year ago
 one year ago
The figure below shows a triangle with vertices A and B on a circle and vertex C outside it. Side AC is tangent to the circle. Side BC is a secant intersecting the circle at point X. What is the measure of angle ACB? 6, 12, 24 or 32 degrees
 one year ago
 one year ago

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audreygator912Best ResponseYou've already chosen the best response.0
@pfenn1 can you help me please?
 one year ago

pfenn1Best ResponseYou've already chosen the best response.0
@Kris5, could you show how you got the answer, not just the answer?
 one year ago

Kris5Best ResponseYou've already chosen the best response.1
Sure, <XBA is an inscribed angle. Therefore, it is twice the measure of its intercepted arc. Its intercepted arc is arc XA. So... arc XA= 2m<XBA... arc XA=2(64)...arc XA=128. Now< ACB= 1/2 (BAXA)... <ACB=1/2(152128)...<ACB=1/2(24)...<ACB=12 :)
 one year ago
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