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July 25, 2014

July 25, 2014

Posted by **Anonymous** on Wednesday, January 23, 2013 at 9:53am.

a cos { ( alpha + beta)/2}.

- maths -
**Steve**, Wednesday, January 23, 2013 at 10:33amboth points are on a circle of radius a.

The distance to the line is the altitude of the triangle formed by the two points and the circle center.

Draw the diagram and see the answer checks.

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