samihazem2004oxvbbn samihazem2004oxvbbn

01-06-2020
Mathematics

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Can someone help in this one please

Can someone help in this one please class=

Respuesta :

TheLazyNobita TheLazyNobita

01-06-2020

Answer:

As radius is perpendicular to tangent,

By pythagoras theorem :

x² = (x + 9)² - 15²

x² = x² + 18x + 81 - 225

18x = 207

x = 11.5

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