If the value of \( \cos \alpha \) is \( \frac{\sqrt{3}}{2} \), then \( A + A = I \), where \[ A = \begin{bmatrix} \sin\alpha & -\cos\alpha \\ \cos\alpha & \sin\alpha \end{bmatrix}. \]
Health is described as a state of complete physical, mental and social well-being.
The disease is a circumstance where malfunctioning of the body organs occurs leading to uneasiness and discomfort.
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