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What is the measure of AC?
Enter your answer in the box. Enter only the numerical value.

What is the measure of AC? Enter your answer in the box. Enter only the numerical-example-1
User Borfast
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Explanation:

Angle BDC is an angle inscribed in a circle. As such it intercepts TWICE as many degrees of arc as its measure

so: 2 * (3x-1.5) = 3x+9

6x -3 = 3x+9

x = 4

then the arc AC = 3x+9 = 21 degrees

User Madiyaan Damha
by
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