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Karrie drew a design for a window transom with arc measures as shown.What is m2 BFC?60°с120°90°90°30°60°45°FE

Karrie drew a design for a window transom with arc measures as shown.What is m2 BFC-example-1
User Donstack
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1 Answer

5 votes

As we can see, the angle mBFC is an Inscribed Angle. It is known that the inscribed angle is half the intercepted arc. In this case:


\angle BFC=(1)/(2)arcBC

The arcBC measure is given: 60°, so:


\angle BFC=(1)/(2)60\degree=30\degree

User Slenkra
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