1.

If A=cos9∘−sin9∘cos9∘+sin9∘,B=cos21∘+sin21∘cos21∘−sin21∘ and C=tan20∘+tan40∘+√3tan20∘tan40∘, then the correct relation between A,B,C is

Answer»

If A=cos9sin9cos9+sin9,B=cos21+sin21cos21sin21 and C=tan20+tan40+3tan20tan40, then the correct relation between A,B,C is



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