denisekeith15 denisekeith15
  • 25-09-2017
  • Mathematics
contestada

Given that ab is a tangent if circle with center at x, ab=12, and xd=2.5, which is the length of db

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April135 April135
  • 25-09-2017
so if u draw out the questions 

so xbd is a triangle : so xb is 12/2 cm = 6 cm
xd is 2.5 cm and because of the Pythagoras theorem

6^2+2.5^2=bd^2
42.25=bd^2
bd=6.5 
 
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