Question

Verify whether this is an identity: ((sec^2(x))(sec^2(x)+1))/sin^2(x) + csc^4(x) - tan^2(x)*cos^2(x) = (sec^4(x))/sin^2(x) + sec^2(x)*csc^4(x) - sin^2(x)
It is clearly not an identity.
Plug in x = π/4

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