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先看下例 例 1 已知 tana=2,tanβ=3,且α,β都是锐角,求a+β。 解tan(α+β)=tanα+tanβ/1-tanαtanβ
Let’s look at the following example. Example 1 It is known that tana=2, tanβ=3, and α, β are all acute angles. Find a+β. Solution tan(α+β)=tanα+tanβ/1-tanαtanβ