Class 11MathematicsTrigonometrical EquationsRelation between sides and angles, Solutions of triangles
DifficultIn a triangle $ABC$,$a = 4$,$b = 3$,and $\angle A = 60^\circ$. Then $c$ is the root of the equation:
- A$c^2 - 3c - 7 = 0$
- B$c^2 + 3c + 7 = 0$
- C$c^2 - 3c + 7 = 0$
- D$c^2 + 3c - 7 = 0$
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