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JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

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In any △ABC,4(sa−1)(sb−1)(sc−1)\triangle A B C, 4\left(\frac{s}{a}-1\right)\left(\frac{s}{b}-1\right)\left(\frac{s}{c}-1\right) is equal to
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Correct option: A
rR\frac{r}{R}
Option A (rR\frac{r}{R}) is correct because the given expression simplifies to the ratio of the inradius to the circumradius of the triangle.

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