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NNADVOKAT [17]
3 years ago
11

GEOMETRY HELP URGENT?

Mathematics
1 answer:
nadezda [96]3 years ago
6 0

Let the centre be O and the line with one end point at the centre and another at the chord CD touches the chord at S .

So CS is the half of 36.7 = 18.35

sin \angle COS = \frac{18.75}{21.8}

\angle COS = sin^{-1}(\frac{18.75}{21.8}) =59.35 degree\\

Therefore,


\angle COD =2*59.35 =118.7

Therefore the measurement of arc CD is 118.7 degree.



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