For any angle , state the value of : ^2 + ^2 - Vidyadip

Question

For any angle $ \theta , $ state the value of :$ \sin^2\theta + \cos^2\theta$

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Answer

$\sin^2 \theta =\cos^2 \theta$
$= \sin^2 \theta + 1 – \sin^2\theta$
$= 1$

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