Verify the identity. 1 1 sec(x) + tan(x) sec(x) - tan(x) + 1 1 sec(x) + tan(x) sec(x) - tan(x) + = = = 2 sec(x) sec(x) + tan(x) + sec(x) − tan(x) (sec(x) + tan(x)) ( sec²(x) - tan²(x) 2 sec(x)

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