The formula to calculate the Initial Angle (IA) is:
\[ IA = \frac{1}{2} \cdot \arcsin\left(\frac{g \cdot d}{v^2}\right) \cdot 57.2958 \]
Where:
Let's assume the following values:
Using the formula to calculate the Initial Angle:
\[ IA = \frac{1}{2} \cdot \arcsin\left(\frac{9.81 \cdot 100}{50^2}\right) \cdot 57.2958 = 11.55 \text{ degrees} \]
The Initial Angle is 11.55 degrees.