trigonometry

Question: In a triangle ABC, $a:b:c=4:5:6$. The ratio of the radius of the circumcircle to that of the incircle is

1) $\frac{16}{9}$

2) $\frac{16}{7}$

3) $\frac{11}{7}$

4) $\frac{7}{16}$

Solution:

Explanation: No Explanation

Circle connected with triangle

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