In the diagram below ab and bc are tangent to o. which equation could be solved to find x, the measure of ac?

A) 1/2(238-x) = 58

Step-by-step explanation:

When an angle is formed by two secants, a tangent and a secant, or two tangents of a circle, the measure of this angle is one-half of the difference between the intercepted arcs.

In this circle, the intercepted arc measures are 238° and x°.  Their difference would be (238-x).  One-half of this would be 1/2(238-x).  This is equal to the angle measure, which is 58°.  This gives us the equation

1/2(238-x) = 58

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.

c

step-by-step explanation: