Solve the following:
\(\frac{1}{1+\sin\theta}\) + \(\frac{1}{1-\sin\theta}\) = ?
What is the number of squares in the following figure?

The given graph shows the distribution of minerals in the human body. Which two minerals are required almost in the same percentage for the human body?
Sodium and potassium
Magnesium and potassium
Calcium and sodium
Calcium and magnesium