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Grade: 12
        
Find the sum of the question 
4 years ago

Answers : (2)

noogler
489 Points
							
where is the question???????????????
 
plz post ur question again :-)
4 years ago
aakanksha
40 Points
							
the question is:
cos(thita)+ 22cos(2thita)+ 32cos(3thita)+..........+ n2cos(nthita) = 
4 years ago
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