In a triangle ABC, if a= 13, b = 14, c = 15 then 1r.:1r.:1r. is

s=211r1:1r2:1r3=s−aΔ:s−bΔ:s−cΔ=8:7:6

In a triangle ABC, if a= 13, b = 14, c = 15 then 1r.:1r.:1r. is

s=211r1:1r2:1r3=s−aΔ:s−bΔ:s−cΔ=8:7:6

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In a triangle ABC, if a= 13, b = 14, c = 15 then $\frac{1}{r .} : \frac{1}{r .} : \frac{1}{r .}$ is

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8: 7: 6

3:4:5

5: 12: 13

6:7:8

answer is B.

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$\begin{array}{l} s = 21 \\ \frac{1}{r_{1}} : \frac{1}{r_{2}} : \frac{1}{r_{3}} = \frac{s - a}{Δ} : \frac{s - b}{Δ} : \frac{s - c}{Δ} \\ = 8 : 7 : 6 \end{array}$

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In a triangle ABC, if a= 13, b = 14, c = 15 then 1r.:1r.:1r. is

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In a triangle ABC, if a= 13, b = 14, c = 15 then $\frac{1}{r .} : \frac{1}{r .} : \frac{1}{r .}$ is