(tan(2a+b)乘以tan(a-b))/(1-tan(2a+b)tan(a-b))化简

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(tan(2a+b)乘以tan(a-b))/(1-tan(2a+b)tan(a-b))化简
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(tan(2a+b)乘以tan(a-b))/(1-tan(2a+b)tan(a-b))化简
(tan(2a+b)乘以tan(a-b))/(1-tan(2a+b)tan(a-b))
化简

(tan(2a+b)乘以tan(a-b))/(1-tan(2a+b)tan(a-b))化简
上面是加吧