You are sitting by the shore of a lake on a sunny and windless day. when are your polaroid sunglasses most effective in reducing the glare of the sunlight reflected from the lake surface? when the angle of incidence of the sunlight on the lake is

0° to 90°.

Explanation:

The angle of incidence of the sunlight on the lake will be in between 0° to 90°.

As we know that when the light comes from the sun it is unpolarized but after when sunlight reflected from the sea, the lake then it gets polarized.

The chances of internal reflection get increases if the angle of incidence is more.

Answer is 0° to 90°.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y