Two polaroids are crossed to each other. One of them is rotated through `60^(@)`, what % age of incident unpolarised light will pass through the system ?

Two polaroids are kept crossed to each other . If one of them is rotated an angle 60^@ , the percentage of incident light now transmitted through the system is

Two polaroids are kept crossed to each other . If one of them is rotated an angle 60^@ , the percentage of incident light now transmitted through the system is

Two polaroids are kept crossed to each other. Now one of them is rotated through an angle of 45^(@) . The percentage of incident light now transmitted through the system is

Two polaroids are kept crossed to each other. Now one of them is rotated through an angle of 45^(@) . The percentage of incident light now transmitted through the system is

Two polaroids are kept crossed to each other. Now one of them is rotated through an angle of 45^(@) . The percentage of incident light now transmitted through the system is