Class 11MathematicsTrigonometrical EquationsRelation between sides and angles, Solutions of triangles
MediumIf ${p_1}, {p_2}, {p_3}$ are altitudes of a triangle $ABC$ from the vertices $A, B, C$ respectively and $\Delta$ is the area of the triangle,then ${p_1}^{-2} + {p_2}^{-2} + {p_3}^{-2}$ is equal to
- A$\frac{a + b + c}{\Delta}$
- B$\frac{a^2 + b^2 + c^2}{4\Delta^2}$
- C$\frac{a^2 + b^2 + c^2}{\Delta^2}$
- DNone of these
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