Mathematics, 17.07.2019 11:00, kg4385649

In the diagram, segment da is tangent to the circle at point a, and segment db is secant to the circle at points c and b. the rays intersect outside of the circle at point d to form ∠d, which intercepts arc ac and arc ab. if m∠d=81°, m of arc ab = (5x)°, and m of arc ac = (2x−21)°, what is the measure of arc ac? * a.73° b.64° c.78° d.81°

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In the diagram, segment da is tangent to the circle at point a, and segment db is secant to the circ...