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Prove: [secA-1]/[secA+1]=[1-cosA]/[1+co...

Prove: `[secA-1]/[secA+1]=[1-cosA]/[1+cosA]`

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Prove: 1/(secA-1)+1/(secA+1)=2\ cos e c\ AcotA

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

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

(1+secA)/secA=(sin^2A)/(1-cosA)

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

Prove: (cos e c\ A-sinA)(secA-cosA)(tanA+cotA)=1

(tanA+secA-1)/(tanA-secA+1)=(1+sinA)/(cosA)

(tanA+secA-1)/(tanA-secA+1)=(1+sinA)/cosA .

(tanA+secA-1)/(tanA-secA+1)=(1+sinA)/(cosA)

(tanA+secA-1)/(tanA-secA+1)=(cosA)/(1-sinA)