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An electrician has to repair an electric...

An electrician has to repair an electric fault on a pole of height 4 metres.He needs to reach a point 1 m below the top of the pole to undertake the repair work.What should be the length of the ladder that he should use, which when inclined at an angle `60^@` to the horizontal would enable him to reach the required position? [use `sqrt3=1.73`]

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An electrician has to repair an electric fault on a pole of height 4m. He needs to reach a point 1.3m below the top of the pole to undertake the repair work. What should be the length of the ladder that he should use which when inclined at an angle of 60^@ to the horizontal would enable him to reach the required position?

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An electrician wants to repair an electric connection on a pole of height 9 m. He needs to reach 1.8 m below the top of the pole to do repair work. What should be the length of the ladder which he should use, when he climbs it at an angle of 60^(@) with the ground? What will be the distance between foot of the ladder and foot of the pole?

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