IIT JEE TRIGONOMETRIC FUNCTIONS If `xsina+ysin2a+zsin3a=sin4a` `xsinb+ysin2b+zsin3b=sin4b`, ...

612 views · Published 22 September 2017 · 3:55 · Indexed 28 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/EiGzg7jHxR

If `xsina+ysin2a+zsin3a=sin4a`

`xsinb+ysin2b+zsin3b=sin4b`,

`xsinc+ysin2c+zsin3c=sin4c`,

then the roots of the equation `t^3-(z/2)t^2-((y+2)/4)t+((z-x)/8)=0,a , b , c ,!=npi,`
are
(a)`sina ,sinb ,sinc`
 (b) `cosa ,cosb ,cosc`

(b)`sin2a ,sin2b ,sin2c`
 (d) `cos2a ,cos2bcos2c`

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