Find the value of ${sin}^{2} 45^{o} + {cos}^{2} 45^{o}$ .

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Solution

We know that ${sin}^{2} θ + {cos}^{2} θ = 1$
Here, $θ = 45^{o}$
$∴$ ${sin}^{2} 45^{o} + {cos}^{2} 45^{o} = 1$

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