If - - - - 3-4 then 1 - tan- 1 - tan- -

The correct option is B 2 α β =3π4 tan (α β)=tan^3π4 tanα tanβ1+tanαtanβ=1 tanα tanβ = 1 tanαtanβ tanβ tanα 1tanαtanβ =0 ...

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Sin(A+B)Sin(A-B)

If α - β = ...

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If $α - β = \frac{3 π}{4}$ then $(1 - tan α) (1 + tan β) =$

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