Distance Between the Foci and a Vertex
For the major-axis vertex $$A(a,0)$$:
$$AS_1=a-c$$
$$AS_2=a+c$$
Usage
- Used in focal-distance problems involving a major-axis vertex.
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Distance Between the Foci and a Vertex
Distance Between the Foci and a Vertex
For the major-axis vertex $$A(a,0)$$:
$$AS_1=a-c$$
$$AS_2=a+c$$
Usage
- Used in focal-distance problems involving a major-axis vertex.
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