If the value of \( \cos \alpha \) is \( \frac{\sqrt{3}}{2} \), then \( A + A = I \), where \[ A = \begin{bmatrix} \sin\alpha & -\cos\alpha \\ \cos\alpha & \sin\alpha \end{bmatrix}. \]
Photosynthesis in higher plants involves the following processes:
This process occurs in the absence of light in the stroma of the chloroplasts. The following cycles are involved in the process: