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Waveform Audio File Format  |  1995-06-29  |  234.3 KB  |  1 channel  |  22,050 sample rate  |  21 seconds  |  [TEXT/LMAN]
Transcription: The branch of mathematics that deals with the relationships between the sides and angles of triangles is called trigonometry. Provided enough information is already known, trigonometry can be used to find the measurements of unknown sides, areas, and angles in a triangle. We can use trigonometry to find the size of angle C and the triangle below.