Math homework help please?

Prove the folowing Identity:

(1+sinx+cosx) / (1+sinx-cosx) = (1+cosx) / sinx

Thanks for ur help...

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  • Anonymous
    1 decade ago
    Favorite Answer

    sinx+sin²x+sinx.cosx=1+sinx-cosx+cosx+sinx.cosx-cos²x

    (it's the cross product)

    then sin²x=1-cos²x

    and sin²x+cos²x=1 whitch is true

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