prove that `(1)/(secA - tanA) = secA + tanA `

Prove that (tanA)/(1+secA) - (tanA)/(1-secA) = 2cosecA

Prove that : (secA-tanA)/(secA+tanA)=1-2secAtanA+2tan^(2)A

Prove that : ("cosec"A+1)/("cosec"A-1)=secA+tanA

Prove that : (secA+tanA)(1-sinA)=cosA

Prove that: tanA(1+sec2A)=tan2A

Prove that: cot2A + tanA= cotA - cot 2A

The value of (secA + tanA-1) (sec A -tanA+1) -2tanA is equal to

Prove that: sqrt((1-sinA)/(1+sinA))={(secA-tanA,if -pi/2 lt A lt pi/2),(tanA-secA ,if pi/2 lt A lt (3pi)/2):}

Prove that 1+tan^2A/(1+secA)=secA

Prove that 1+(1)/(cosA)=(tan^(2)A)/(secA-1)