anonymous
  • anonymous
This one has stumped me... Three circles of radii 5 cm, 6 cm and 8 cm are positioned so that they just touch one another. Their centres form the vertices of a triangle. Find the largest angle in the triangle.
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
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mathstudent55
  • mathstudent55
The three sides measure 11, 13, and 14. The largest angle is opposite the longest side. Use the law of cosines to find it.
mathstudent55
  • mathstudent55
Add the radii of each two adjacent circles.

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ParthKohli
  • ParthKohli
It's pretty easy. The radius remains the same.
mathstudent55
  • mathstudent55
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