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

tan((pi)/(4)-(A)/(2))=sec A-tan A=sqrt((1-sin A)/(1+sin A)A)

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

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

Prove that : tan (pi/4 - A/2) = sec A - tan A = sqrt((1-sin A)/(1+ sin A))

Show that (i) sin^(8)A-cos^(8)A=(sin^(2)A-cos^(2)A)(1-2sin^(2)A.cos^(2)A) (ii) (1)/(sec A-tan A)-(1)/(cos A)=(1)/(cos A)-(1)/(sec A + tan A)

Show that (i) sin^(8)A-cos^(8)A=(sin^(2)A-cos^(2)A)(1-2sin^(2)A.cos^(2)A) (ii) (1)/(sec A-tan A)-(1)/(cos A)=(1)/(cos A)-(1)/(sec A + tan A)

if cos A=(4)/(5) then prove that (tan A)/(1+tan^(2)A)=(sin A)/(sec A)

(sec A+ tan A) (1 - sin A) equals to

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

(sec theta+tan theta)^(2)=(1+sin theta)/(1-sin theta)