I need help | Mathematics | Page 1

regal night Feb 13, 2023, 1:22 PM

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HelpI

blazing martenBOT Feb 13, 2023, 1:22 PM

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regal night Feb 13, 2023, 1:23 PM

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Mhm

unkempt jacinth Feb 13, 2023, 1:34 PM

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do you know about the properties in a circle?

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the central angle is twice any angle subtended by the same arc

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in the picture, angle 0 is subtended by arc AC, so is angle D

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that means angle O = 2 angle D

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110 divided by 2 is 55

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and another theorem is that the opposite angles of a cyclic quadrilateral adds up to 180 degrees

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so y = 180 - 55 = 125

knotty roost Feb 13, 2023, 2:48 PM

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hey

soft totem Feb 13, 2023, 5:53 PM

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angle x is inscribed angle thus it is equal to half the value of arc abc = 1/2*110=55degree . x+y = 180 (angles are in a cyclic quadrilateral) thus y is 125 degree

#I need help