" 2."(tan A)/(1+sec A)-(tan A)/(1-sec A)...

" 2."(tan A)/(1+sec A)-(tan A)/(1-sec A)=2csc A

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

Prove that (tan A)/(sec A-1)+(tan A)/(sec A+1)=2 cosec A .

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

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

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

" (i) "(1+sec A+tan A)(1-cosec A+cot A)=2

(1+tan A+sec A)(1+cot A-cosec A)=

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

Prove that : (tan A)/ (1 - cot A) + (cot A)/ (1 - tan A) = sec A cosec A + 1

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