Problem #PRU-57633

Problems Geometry Plane geometry Triangles Relationship of side lengths and angles of a triangle. Solving triangles. Relations between sides and angles of a triangle (other)
 13–15  2.0

Problem

Two intersecting circles of radius \(R\) are given, and the distance between their centers is greater than \(R\). Prove that \(\angle ECD = 3\angle CAD\).

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