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chase

  • 5 years ago

(1+tan)(tan2x)=2tanx/1-tanx

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  1. anonymous
    • 5 years ago
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    is it : 1+tan(x)?

  2. anonymous
    • 5 years ago
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    after simplifying you'll have 1=1... what do you need to do...?

  3. chase
    • 5 years ago
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    both sides have to be equal to each other

  4. chase
    • 5 years ago
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    how did you simplify it to 1=1?

  5. anonymous
    • 5 years ago
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    tan2x=2tanx/(1-tanx^2) - double-angle formula so, (1+tanx)*2*tanx/(1-tanx^2) = 2tanx/(1-tanx) simplify - 2tans=canceled out on both sides (1+tanx)/[(1-tanx)*(1+tanx)]= 1/(1-tanx) everything canceling out.... so, in general left side of your original eq = right side unless, I mis-read your original problem, it should be right...

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