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find greatest integer of the following 1/ 2 +1/ 3 +1/ 4 +.............+1/ 80 ...
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nishant sir could you please provide some link or source from where we can study geometry which helps solve coordinate . ...
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can somebody explain or give link to study polar cordinates as it is useful to find velocit etc. suppose a rod is leaning against the wall with the rod beimg almost vertical then find the angle at which it shall leave contact ...