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Grade: 11 

                        
prove that cosec A + cosec 2A +cosec 2^A...+cosec2^n-1=cot A/2-cot 2^n-1 A
8 years ago

Answers : (1)

Saurabh Koranglekar
askIITians Faculty
8407 Points 
							Dear student

There is an error in writing question, kindly correct and repost or attach an image

Regadrs
7 months ago
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