1. **State the problem:** We are given a circle with a chord and three angles: an outside angle labeled $74^\circ$, an inside angle adjacent to the chord labeled $81^\circ$, and another outside angle labeled $(17x - 23)^\circ$. We need to find the value of $x$.
2. **Recall the circle angle rules:** The outside angle formed by two secants, tangents, or a secant and a tangent is equal to half the difference of the intercepted arcs. Here, the two outside angles $74^\circ$ and $(17x - 23)^\circ$ are related to the inside angle $81^\circ$.
3. **Set up the equation:** The sum of the two outside angles equals twice the inside angle adjacent to the chord:
$$74 + (17x - 23) = 2 \times 81$$
4. **Simplify the equation:**
$$74 + 17x - 23 = 162$$
$$51 + 17x = 162$$
5. **Isolate $x$:**
$$17x = 162 - 51$$
$$17x = 111$$
6. **Divide both sides by 17:**
$$x = \frac{111}{17}$$
7. **Simplify the fraction:**
$$x = \cancel{\frac{111}{17}} = 6.5294117647$$ (approximate decimal)
**Final answer:**
$$x = \frac{111}{17}$$ or approximately $6.53$
Circle Angle C087A3
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