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

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

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

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

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

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

sec^(4)theta(1-sin^(4)theta)-2tan^(2)theta=1

Prove that following identities sec^(4)theta(1-sin^(4)theta)-2tan^(2)theta=1

sec^(4)alpha(1-sin^(4)alpha)-2tan^(2)alpha=?

prove that 1+2sec^(2)A*tan^(2)A-sec^(4)A-tan^(4)A=0

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)