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IIT JEE TRIGONOMETRIC FUNCTIONS For a positive integer `n ,` let `f_n(theta)=(tantheta//2)(1+se...

199 views · Published 22 September 2017 · 5:37 · Indexed 25 October 2026

Channel: Doubtnut · 2017 · Education

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This is the Solution of question from Cengage Publication Math Book Trigonometry Chapter 6 TRIGONOMETRIC FUNCTIONS 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/UaAdAk4GxR

For a positive integer `n ,`
let
`f_n(theta)=(tantheta//2)(1+sectheta)(1+sec2theta)(1+sec4theta)...................(1+sec2^ntheta)`. Then

(a)`f_2(pi/(16))=1`

 (b) `f_3(pi/(32))=1`

(c)`f_4(pi/(64))=1`

 (d) `f_5(pi/(128))=1`

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