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GEOMETRY HELP URGENT?

GEOMETRY HELP URGENT?-example-1

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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 = (18.75)/(21.8)


image

Therefore,



\angle COD =2*59.35 =118.7

Therefore the measurement of arc CD is 118.7 degree.



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