The shock wave off the cockpit of the FA 18 has an angle of about `60^@` . The airplane was traveling at about 1350 km/h when the photograph was taken. Approximately what was the speed of sound at the air plane's altitude?

Explanation

To find the speed of sound at the altitude of the FA-18 when it was traveling at 1350 km/h and producing a shock wave with an angle of 60 degrees, we can follow these steps:

### Step-by-Step Solution:

1. **Convert the Speed of the Airplane to m/s**:
The speed of the airplane is given as 1350 km/h. To convert this to meters per second (m/s), we use the conversion factor:
\[
1 \text{ km/h} = \frac{1000 \text{ m}}{3600 \text{ s}} \approx 0.27778 \text{ m/s}
...