A ladder 10 m long just reaches the top of a wall and makes an angle of 60° with the wall. Calculate the distance of the foot of the ladder from the wall (√3=1.73)
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Lunar eclipses occur when Earth's shadow blocks the sun's light, which otherwise reflects off the moon. There are three types — total, partial and penumbral — with the most dramatic being a total lunar eclipse, in which Earth's shadow completely covers the moon
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