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Mathematics 7 Online
OpenStudy (ashleyisakitty):

AB Is tangent to O. If AO=17 and BC=128, what is AB?

OpenStudy (ashleyisakitty):

OpenStudy (ashleyisakitty):

Do we use pythag?

OpenStudy (raffle_snaffle):

law of sins

OpenStudy (raden):

yeah, just use pythagorean theorem look that OB = OC + BC = 17 + 128 = 145 (note : OC = AO = radius)

OpenStudy (raden):

therefore. AB^2 = OB^2 - AO^2 solve for AB

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