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" 6.Prove that ":(sec A-tan A)/(sec A+ta...

" 6.Prove that ":(sec A-tan A)/(sec A+tan A)=1-2sec A tan A+2tan^(2)A

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(1)/(sec A-tan A)=sec A+tan A

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1/(sec A + tan A) = sec A - tan A

Prove the following identities : (sec A - tan A)/ (sec A + tan A) = 1 - 2 sec A tan A + 2 tan^(2) A

Prove that (1+sec A-tan A)/(1+sec A+tan A)=1-sin A/(cos A)

(sec A+tan A-1)(sec A-tan A+1)=2tan A

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Prove that 1+(tan^(2)A)/(1+sec A)=sec A