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OpenStudy (anonymous):
If AC = 25 mm and AB = 15 mm, calculate the length of AD.
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OpenStudy (anonymous):
OpenStudy (raden):
AD * AC = AB^2 AD * 25 = 15^2 solve for AD
OpenStudy (anonymous):
AD= 9 ?
OpenStudy (raden):
that's right
OpenStudy (anonymous):
How do we get that relation ?
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OpenStudy (raden):
that must be in your book, right ? read about secant theorem
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