Radians

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Question 26

A polarizing lens reduces the intensity of an incoming light beam according to the model

L(\theta) = 12\cos^2 \theta

where $L$ is the transmitted intensity in candelas and $θ\theta$ is the orientation angle of the lens in radians.

Determine all values of $θ\theta$ in the interval $\le \theta \le 2\pi$ for which the transmitted intensity is exactly $9$ candelas. Give your answers as exact multiples of $π\pi$ .

[4]

Radians

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Question 26

A polarizing lens reduces the intensity of an incoming light beam according to the model

L(\theta) = 12\cos^2 \theta

where $L$ is the transmitted intensity in candelas and $θ\theta$ is the orientation angle of the lens in radians.

Determine all values of $θ\theta$ in the interval $\le \theta \le 2\pi$ for which the transmitted intensity is exactly $9$ candelas. Give your answers as exact multiples of $π\pi$ .

[4]

Radians

Question 26

Radians Questions

Radians

Question 26

Radians Questions