Math, asked by suspkp, 1 year ago

prove it (sec+tan- 1)(sec-tan+1)=2tan

Answers

Answered by ana19

1

sec2 + sectan -sec -tansec - tan2 + sec + tan -1 + tan. = sec2 - tan2 + 2tan - 1. = 1 + tan2 - tan2 + 2tan - 1. LHS =2tan.

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