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IIT JEE SEQUENCES AND SERIES If `a_1, a_2, a_n` are in A.P. with common difference `d!=0` , the...

69 views · Published 22 September 2017 · 2:45 · Indexed 22 September 2026

Channel: Doubtnut · 2017 · Education

This is the Solution of question from Cengage Publication Math Book Algebra Chapter 6 SEQUENCES AND SERIES written By G. Tewani. You can Find Solution of all math questions from CENGAGE BOOK on our app DOUBTNUT for free. Download Doubtnut from - https://doubtnut.app.link/qyRjY5IBxR

 If `a_1, a_2, a_n`
are in A.P. with common difference `d!=0`
, then the sum of the series `sind[seca_1seca_2+(sec)_2seca_3+....+s e ca_(n-1)(sec)_n]`
is : 
a.`cos e ca_n-cos e ca`
b. `cota_n-cota`

c. `s e ca_n-s e ca`
d. `t a na_n-t a na`

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IIT JEE SEQUENCES AND SERIES If `a_1, a_2, a_n` are in A.P. with common difference `d!=0` , the...

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