(sec A-tan A)/(sec A+tan A)=1-2sec A*tan A+2tan^(2)A

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

(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

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

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

sqrt((sec A-tan A)/(sec A+tan A))=?

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

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

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

If (sec A+tan A)(sec B+tan B)(sec C+tan C)=(sec A-tan A)(sec B-tan B)(sec C-tan C) prove that the value of each side is +-1