求证:(tanα+secα-1)/(tanα-secα+1)=(secα+tanα+1)/(secα-tanα+1)

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求证:(tanα+secα-1)/(tanα-secα+1)=(secα+tanα+1)/(secα-tanα+1)

求证:(tanα+secα-1)/(tanα-secα+1)=(secα+tanα+1)/(secα-tanα+1)
求证:(tanα+secα-1)/(tanα-secα+1)=(secα+tanα+1)/(secα-tanα+1)

求证:(tanα+secα-1)/(tanα-secα+1)=(secα+tanα+1)/(secα-tanα+1)

原式:

 

问顺风物流就可以了