Question

what is arc??
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Answer 1

There are a number of meanings for the word "arc" in mathematics. In general, an arc is any smooth curve joining two points. The length of an arc is known as its arc length.

In a graph, a graph arc is an ordered pair of adjacent vertices.

In particular, an arc is any portion (other than the entire curve) of the circumference of a circle. An arc corresponding to the central angle ∠AOC is denoted arcAC. Similarly, the size of the central angle subtended by this arc (i.e., the measure of the arc) is sometimes (e.g., Rhoad et al. 1984, p. 421) but not always (e.g., Jurgensen 1963) denoted marcAC.

The center of an arc is the center of the circle of which the arc is a part.

An arc whose endpoints lie on a diameter of a circle is called a semicircle.

Answer 2

The Audio Return Channel (ARC) connects your TV and audio system with a single High Speed HDMI® cable and eliminates the need for an additional composite audio or optical cable.