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Answer :

Answer:

∠ APC = 25°

Step-by-step explanation:

The secant- secant angle APC is half the difference of the intercepted arcs, that is

∠ APC = [tex]\frac{1}{2}[/tex] (AC - BD) = [tex]\frac{1}{2}[/tex] (70 - 20)° = 0.5 × 50° = 25°