chandugollapalli chandugollapalli

03-04-2014
Math

Answered

sin2 9 + sin2 81[tex]`sin^{2} 9+sin^{2}81`[/tex]

Answer :

sankalpb3 sankalpb3

05-04-2014

write sin^2(9)=sin^2(90-81)=cos^2(81)
so the answer will be cos^2(81)+sin^2(81)=1
so answer is 1

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