muni3
muni3 muni3
  • 02-03-2017
  • Mathematics
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If you can do one or two it'll be great

If you can do one or two itll be great class=

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popcornrox37
popcornrox37 popcornrox37
  • 02-03-2017
For 1: 
Use pythagorean theorem because of the radius tangent theorem(point of contact = 90 degrees)
12 is the hypotenuse (the right angle points at the hypotenuse)
Therefore: 
(9)^2 + (x)^2 = (12)^2
81 + x^2 = 144 
Subtract 81 from both sides of the equation 
x^2 = 63 
Square root both sides to get rid of square on x and isolate the variable 
The square root of 63 = 7.93 (roughly)
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