Question

what is the answer of
$sin {}^{2} \alpha + \cos { \alpha }^{2} =$
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Answer 1

Answer:

$it \: is \: an \: identity \\ { \sin}^{2}a \: + { \cos}^{2}a \: = 1 \\ the \: prove \: of \: this \: identity \: is \: given \: above$

hope it helps.............

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Answer 2

${ \sin( \alpha ) }^{2} + { \cos( \alpha ) }^{2} = 1$