Problem 83 of 7
Find the exterior angle formed by two secants when the intercepted arcs are 9x degrees and 3x degrees.
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use half the difference of intercepted arcs.
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Vertex must be outside the circle; use half the difference of intercepted arcs.
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Solution
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1. Identify the larger and smaller intercepted arcs.
2. Subtract the smaller arc from the larger arc.
3. Divide the difference by 2.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Adding arcs for an exterior angle.