TS EAMCET · Maths · Properties of Triangles
\(\frac{1}{r^2}+\frac{1}{r_1^2}+\frac{1}{r_2^2}+\frac{1}{r_3^2}\) equals
- A \(\frac{a^2+b^2+c^2}{\Delta}\)
- B \(\frac{a^2+b^2+c^2}{\Delta^2}\)
- C \(\frac{\Delta^2}{a^2+b^2+c^2}\)
- D \(\frac{\Delta}{a^2+b^2+c^2}\)
Answer & Solution
Correct Answer
(B) \(\frac{a^2+b^2+c^2}{\Delta^2}\)
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