Class 11MathematicsTrigonometrical EquationsRelation between sides and angles, Solutions of triangles
MediumLet $A, B$ and $C$ be three angles of a $\triangle ABC$ such that $\cos A + \cos B + \cos C = \frac{3}{2}$,then the $\triangle ABC$ is
- AEquilateral
- BRight angled
- CIsosceles but not equilateral
- DScalene
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