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Distance upstream = 10 km, time taken to row upstream = 5 hrs. Speed upstream = 10/5 = 2 km/hr. Distance downstream= 15 km, Time taken to row downstream = 5 hrs. Speed downstream = 15/5 = 3 km/hr. Man’s rate in still water = (3 + 2) * ½ = 2.5 kmph
If O is circumcentre of acute angled triangle ABC, if ∠ BOC = 150˚ then ∠ BAC = ?
Orthocenter of an right angle triangle lies on
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The radius of base of a solid cylinder is 7 cm and its height is 21 cm. It is melted and converted into small bullets. Each bullet is of same size. Eac...
If O is circumcentre of acute angled triangle ABC, if ∠ BAC = 70˚ then ∠ BOC = ?
