` ( cos A ) /( 1 + sin A ) + ( 1 + sin A ) /( cos A ) = 2 sec A `

To prove '(cos A / 1 + sin A) + (1 + sin A / cos A) = 2sec A

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

(1) / (sin A + cos A + 1) + (1) / (sin A + cos A-1) = sec A + csc A

(sin2A) / (sin A) - (cos2A) / (cos A) = sec A

(cos A - sin A )/( cos A + sin A ) = sec 2 A - tan 2 A.

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

(cos A)/(1+sin A)+(sin A)/(cos A)=sec A

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

Prove the following identities : (sin A + cos A)/ (sin A - cos A) + (sin A - cos A)/ (sin A + cos A) = (2)/ (2 sin^(2) A - 1)

Prove that (cos A)/(1+sin A)+(1+sin A)/(cos A)=2sec A