5/10 How is the angle of impact calculated in blood spatter analysis? Using the cosine of the width divided by the length Using the inverse cosine of the length divided by the width Using the tangent of the length divided by the width

## Step 1<br />In blood spatter analysis, the angle of impact is calculated using the inverse cosine of the ratio of the length to the width of the blood drop. This is because the cosine of an angle in a right triangle is defined as the ratio of the adjacent side to the hypotenuse. In this case, the width of the blood drop is the adjacent side and the length of the blood drop is the hypotenuse.<br /><br />## Step 2<br />The formula for calculating the angle of impact is:<br />### \( \text{Angle of Impact} = \cos^{-1} \left( \frac{\text{Width of the blood drop}}{\text{Length of the blood drop}} \right) \)<br /><br />## Step 3<br />This formula is used to determine the angle at which the blood drop struck a surface. The angle of impact can provide valuable information about the position of the victim or the assailant at the time of the crime.