Relationship between Angles and Tangents of a Circle

Author:: Tuyetdong Phan-Yamada, Ishak_Hassan@SG

Topic:: Angles, Circle

1. What is the segment AC and BC called to the circle in the diagram below?

2. Move the slider up and down. What do you notice about the length of AC and BC?

3. Move the slider up and down. What do you notice about the sum of <BOA + <BCA?

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