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niax

  • 2 years ago

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.

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  1. niax
    • 2 years ago
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  2. mathstudent55
    • 2 years ago
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    The three sides measure 11, 13, and 14. The largest angle is opposite the longest side. Use the law of cosines to find it.

  3. mathstudent55
    • 2 years ago
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    Add the radii of each two adjacent circles.

  4. ParthKohli
    • 2 years ago
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    It's pretty easy. The radius remains the same.

  5. mathstudent55
    • 2 years ago
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