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If a1, a2, are in AP with common difference d,then find the sum of the series: sind[coseca1coseca2+coseca2coseca3...cosecan-1cosecan]

+5 votes
asked Aug 20, 2016 in Mathematics by Rahul Roy (7,895 points) 31 96 261

1 Answer

+4 votes
answered Aug 20, 2016 by Annu Priya (17,816 points) 21 40 65
selected Dec 5, 2016 by sarthaks
Best answer

Given: a1,a2, are in AP with d as common difference.

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