Respuesta :

Given

[tex]\sin \theta=\cos \text{ 12}[/tex]

Recall

They are complimentary

Now

[tex]\begin{gathered} USING \\ \sin \theta=\cos \text{ (90-}\theta) \\ \theta=78 \\ \end{gathered}[/tex]

The final answer

[tex]\theta=78^0[/tex]

Ver imagen JaxxenO653408

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