briannaml briannaml

02-05-2018
Mathematics

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PLZ HELP ASAP TANGENTS OF CIRCLES WORD PROBLEMS

PLZ HELP ASAP TANGENTS OF CIRCLES WORD PROBLEMS class=

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Blitztiger Blitztiger

02-05-2018

AC and AB are tangents to circle O, meaning that the angles C and B are right angles of 90 degrees. Since a quadrilateral's internal angles must sum up to 360 degrees, this means that A + B + C + O = 360
70 + 90 + 90 + O = 360
O = 110 degrees.

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