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Prove that : sec^(4)theta-tan^(4)theta=1...

Prove that : `sec^(4)theta-tan^(4)theta=1+2tan^(2)theta`

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To prove that \( \sec^4 \theta - \tan^4 \theta = 1 + 2 \tan^2 \theta \), we will start with the left-hand side (LHS) and manipulate it to reach the right-hand side (RHS). ### Step 1: Start with the LHS We begin with the expression: \[ \sec^4 \theta - \tan^4 \theta \] ...
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