Question

$the \: value \: of \: {sin}^{2} 40 + {cos}^{2} 40 \: is$
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Answer 1

HOLA

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$sin {}^{2} 40 \: + \: cos {}^{2} 40 \: = \: 1$

Reasons for the answer :- We have an identity saying Sin square + Cos square is equal to one , So only Cos and Sin have some value 40 so on Sin square 40 + Cos square 40 we get 1

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HOPE U UNDERSTAND

Regards :- Vilokatbest

Answer 2

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$The \: value \: of \: {sin}^{2} 40 + {cos}^{2} 40 \: is \: 1 \: as \:{sin}^{2} A + {cos}^{2} A=1$


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