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" (क) Prove it : "(sec A-tan A)/(cos A+t...

" (क) Prove it : "(sec A-tan A)/(cos A+tan A)=1-2sec A tan A-2tan^(2)A

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

(sec A-cos A)(cot A+tan A)=tan A.sec A

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

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

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

Prove: (sec A-tan A)/(sec A+tan A)=(cos^(2)A)/((1+sin A)^(2))

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

1+tan A tan2A=sec2A

(sec A - cos A) (cot A + tan A) = tan A sec A.

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