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S is the circumcentre of triangle ADC . Find angle ASD . NOTE : All angles are measured in degrees .


The answer is 60.

Raven Herd by Raven Herd , 21, India

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1 solution

Raven Herd
Jan 17, 2016

I am struggling to find a purely geometrical solution .Anyways, here' s my solution . Since , x is 30 thus angle ASD is 60 because angle at center is double than at the circumference of the circumcircle of triangle ADC .

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Shouldn't ASB=60 degrees whereas ASD will be 105 degrees because B is the point on the circumcircle, not D? Thank you.

Jacob Sony - 1 year, 5 months ago

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