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Simplification
2 sec2A is equal to
(1 - tanA)2 - (1 + tanA)2
√[(1 - tanA)2 + (1 + tanA)2 ]
√[(1 - tanA)2 - (1 + tanA)2]
(1 - tanA)2 + (1 + tanA)2
Correct Answer:
(1 - tanA)2 + (1 + tanA)2
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