Light forms a spot

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Sunlight enters a room at an angle of ? = 27° above the horizontal and reflects from a small mirror lying flat on the floor. The reflected light forms a spot on a wall that is d = 1.8 m behind the mirror, as shown in the figure. If you now place a pencil under the edge of the mirror nearer the wall, tilting it upward by 5.0°, how much higher on the wall (?y) is the spot? answer in cm  please….

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