In the polarizer plane-beam of light falls. After passing through the polarizer the light intensity decreases to 4 times. At what angle it is necessary to rotate the plane of transmission of the polarizer, it is completely extinguished transmitted light? polarizer in disregard losses.

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
If you have any questions about the decision to write. I try to help.