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Answer :

[tex]\\ \tt\hookrightarrow \theta=sin^{-1}(0.7071)[/tex]

  • Let's use calculator

[tex]\\ \tt\hookrightarrow \theta=44.99°[/tex]

Fact about sine(sin)

[tex]\\ \tt\hookrightarrow Sin\theta=\dfrac{Perpendicular}{Hypotenuse}[/tex]