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sec^4A-sec^2A=tan^4A+t a n^2A...

`sec^4A-sec^2A=tan^4A+t a n^2A`

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Prove the following identities: sec^4A-sec^2A=tan^4A+tan^2A

Prove the following identities: sec^4A-sec^2A=tan^4A+tan^2A

Prove the following identities: sec^(4)A-sec^(2)A=tan^(4)A+tan^(2)A

Prove that sec^(4)A-sec^(2)A=tan^(2)A+tan^(4)A .

Prove that: sec^4A(1-sin^4A) -2 tan^2A=1 .

Prove: sec^4A(1-sin^4A)-2tan^2A=1

Prove: sec^4A(1-sin^4A)-2tan^2A=1

Prove that: i) cot^(2)A+cot^(4)A="cosec"^(4)A-"cosec"^(2)A ii) tan^(2)A+tan^(4)A=sec^(4)A-sec^(2)A

Prove that: i) cot^(2)A+cot^(4)A="cosec"^(4)A-"cosec"^(2)A ii) tan^(2)A+tan^(4)A=sec^(4)A-sec^(2)A

Prove that sec^4theta-sec^2theta=tan^4theta+tan^2theta .