Enter the maximum intensity and the angle of incident intensity into the Calculator. The calculator will evaluate the Intensity from Malus Law.

## Intensity from Malus Law Formula

I = Imax * cos^2(a)

Variables:

- I is the Intensity from Malus Law ()
- Imax is the maximum intensity
- a is the angle of incident intensity

To calculate Intensity from Malus Law, multiply the maximum intensity by the cosine squared of the angle of incident.

## How to Calculate Intensity from Malus Law?

The following steps outline how to calculate the Intensity from Malus Law.

- First, determine the maximum intensity.
- Next, determine the angle of incident intensity.
- Next, gather the formula from above = I = Imax * cos^2(a).
- Finally, calculate the Intensity from Malus Law.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

maximum intensity = 500

angle of incident intensity = 43