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[tex]\boxed{
\begin{minipage}{7 cm}
Fundamental Trigonometric Identities \\ \\
$\sin^2\theta + \cos^2\theta=1 \\\\
1+\tan^2\theta = \sec^2\theta \\ \
1+\cot^2\theta = \text{cosec}^2 \,\theta$
\end{minipage}
}[/tex]
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