Trigonometry - Proving and Simplifying Trigonometric Identities

Trigonometry - Proving and Simplifying Trigonometric Identities

Prove the identity \((1 + \tan x)^2 + (1 - \tan x)^2 = 2 \sec^2 x\).

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Answer:\((1+\tan x)^2+(1-\tan x)^2=2\sec^2x\), wherever the expressions are defined.

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