Class 11MathematicsTrigonometrical EquationsRelation between sides and angles, Solutions of triangles
MediumThe inradius of the triangle whose sides are $3, 5, 6$ is
- A$\sqrt{8/7}$
- B$\sqrt{8}$
- C$\sqrt{7}$
- D$\sqrt{7/8}$
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In $\Delta ABC$,$\frac{\cos A}{a} + \frac{\cos B}{b} + \frac{\cos C}{c} = $
Easy
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