A person leaves his house and travelling at 4 kmph reaches his office 10 min late. had he travelled at 6 kmph, he would have reached 20 min early. find the distance from his house to the office

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  1 year ago
• The sub-duplicate ratio of 64:81 is_____.
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• Trigonometry in the form of triangulation forms the basis of navigation , whether is by land, sea or air. gps a radio navigation system helps to locate our position on the earth with the help of satellites. a guard stationed at the top of a 240 m tower observed an unidentified boat coming towards it. a clinometer or inclinometer an instrument used for measuring angles or slopes. the guard used the clinometer to measure the angle of depression of the boat coming towards the lighthouse and found it to be 30˚ i) make a labelled figure on the basis of given information and calculate the distance the boat from the foot of the observation tower. ii)after 10 minutes, the guard observed that the boat was approaching the tower and its distance from tower is reduced by 240(√3 -1) m. he immediately raised the alarm what was new angle of depression of the boat from the top of observation tower.
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  brendan

  1 year ago